diff --git a/lib/tokenize.cpp b/lib/tokenize.cpp
index b5f133f94..8ad9cca83 100644
--- a/lib/tokenize.cpp
+++ b/lib/tokenize.cpp
@@ -5570,16 +5570,22 @@ void Tokenizer::simplifyStdType()
             if (tok->strAt(1) == "long") {
                 tok->str("long");
                 tok->deleteNext();
+            } else if (tok->strAt(1) == "short") {
+                tok->str("short");
+                tok->deleteNext();
             }
             if (tok->strAt(1) == "long") {
                 tok->isLong(true);
                 tok->deleteNext();
             }
-            if (tok->strAt(1) == "unsigned") {
-                tok->isUnsigned(true);
+            if (Token::Match(tok->next(), "unsigned|signed")) {
+                tok->isUnsigned(tok->next()->str() == "unsigned");
+                tok->isSigned(tok->next()->str() == "signed");
                 tok->deleteNext();
                 if (tok->strAt(1) == "long")
                     tok->deleteNext();
+                else if (tok->strAt(1) == "short")
+                    tok->deleteNext();
             }
         } else if (tok->str() == "long") {
             if (tok->strAt(1) == "long") {
@@ -5588,16 +5594,18 @@ void Tokenizer::simplifyStdType()
             }
             if (tok->strAt(1) == "int") {
                 tok->deleteNext();
-                if (tok->strAt(1) == "unsigned") {
-                    tok->isUnsigned(true);
+                if (Token::Match(tok->next(), "unsigned|signed")) {
+                    tok->isUnsigned(tok->next()->str() == "unsigned");
+                    tok->isSigned(tok->next()->str() == "signed");
                     tok->deleteNext();
                 }
             } else if (tok->strAt(1) == "double") {
                 tok->str("double");
                 tok->isLong(true);
                 tok->deleteNext();
-            } else if (tok->strAt(1) == "unsigned") {
-                tok->isUnsigned(true);
+            } else if (Token::Match(tok->next(), "unsigned|signed")) {
+                tok->isUnsigned(tok->next()->str() == "unsigned");
+                tok->isSigned(tok->next()->str() == "signed");
                 tok->deleteNext();
                 if (tok->strAt(1) == "int")
                     tok->deleteNext();
@@ -5605,6 +5613,13 @@ void Tokenizer::simplifyStdType()
         } else if (tok->str() == "short") {
             if (tok->strAt(1) == "int")
                 tok->deleteNext();
+            if (Token::Match(tok->next(), "unsigned|signed")) {
+                tok->isUnsigned(tok->next()->str() == "unsigned");
+                tok->isSigned(tok->next()->str() == "signed");
+                tok->deleteNext();
+                if (tok->strAt(1) == "int")
+                    tok->deleteNext();
+            }
         }
     }
 }
diff --git a/test/testtokenize.cpp b/test/testtokenize.cpp
index 90a885dce..7bbbc2b07 100644
--- a/test/testtokenize.cpp
+++ b/test/testtokenize.cpp
@@ -386,7 +386,7 @@ private:
         TEST_CASE(unsigned2);
         TEST_CASE(unsigned3);   // template arguments
 
-        TEST_CASE(simplifyStdType); // #4947
+        TEST_CASE(simplifyStdType); // #4947, #4950, #4951
 
         TEST_CASE(createLinks);
         TEST_CASE(signed1);
@@ -6140,7 +6140,8 @@ private:
         }
     }
 
-    void simplifyStdType() { // #4947
+    void simplifyStdType() { // #4947, #4950, #4951
+        // usigned long long
         {
             const char code[] = "long long unsigned int x;";
             const char expected[] = "unsigned long long x ;";
@@ -6171,6 +6172,99 @@ private:
             const char expected[] = "unsigned long long x ;";
             ASSERT_EQUALS(expected, tokenizeAndStringify(code));
         }
+        // signed long long
+        {
+            const char code[] = "long long signed int x;";
+            const char expected[] = "signed long long x ;";
+            ASSERT_EQUALS(expected, tokenizeAndStringify(code));
+        }
+        {
+            const char code[] = "long long int signed x;";
+            const char expected[] = "signed long long x ;";
+            ASSERT_EQUALS(expected, tokenizeAndStringify(code));
+        }
+        {
+            const char code[] = "signed long long int x;";
+            const char expected[] = "signed long long x ;";
+            ASSERT_EQUALS(expected, tokenizeAndStringify(code));
+        }
+        {
+            const char code[] = "signed int long long x;";
+            const char expected[] = "signed long long x ;";
+            ASSERT_EQUALS(expected, tokenizeAndStringify(code));
+        }
+        {
+            const char code[] = "int signed long long x;";
+            const char expected[] = "signed long long x ;";
+            ASSERT_EQUALS(expected, tokenizeAndStringify(code));
+        }
+        {
+            const char code[] = "int long long signed x;";
+            const char expected[] = "signed long long x ;";
+            ASSERT_EQUALS(expected, tokenizeAndStringify(code));
+        }
+        // usigned short
+        {
+            const char code[] = "short unsigned int x;";
+            const char expected[] = "unsigned short x ;";
+            ASSERT_EQUALS(expected, tokenizeAndStringify(code));
+        }
+        {
+            const char code[] = "short int unsigned x;";
+            const char expected[] = "unsigned short x ;";
+            ASSERT_EQUALS(expected, tokenizeAndStringify(code));
+        }
+        {
+            const char code[] = "unsigned short int x;";
+            const char expected[] = "unsigned short x ;";
+            ASSERT_EQUALS(expected, tokenizeAndStringify(code));
+        }
+        {
+            const char code[] = "unsigned int short x;";
+            const char expected[] = "unsigned short x ;";
+            ASSERT_EQUALS(expected, tokenizeAndStringify(code));
+        }
+        {
+            const char code[] = "int unsigned short x;";
+            const char expected[] = "unsigned short x ;";
+            ASSERT_EQUALS(expected, tokenizeAndStringify(code));
+        }
+        {
+            const char code[] = "int short unsigned x;";
+            const char expected[] = "unsigned short x ;";
+            ASSERT_EQUALS(expected, tokenizeAndStringify(code));
+        }
+        // signed short
+        {
+            const char code[] = "short signed int x;";
+            const char expected[] = "signed short x ;";
+            ASSERT_EQUALS(expected, tokenizeAndStringify(code));
+        }
+        {
+            const char code[] = "short int signed x;";
+            const char expected[] = "signed short x ;";
+            ASSERT_EQUALS(expected, tokenizeAndStringify(code));
+        }
+        {
+            const char code[] = "signed short int x;";
+            const char expected[] = "signed short x ;";
+            ASSERT_EQUALS(expected, tokenizeAndStringify(code));
+        }
+        {
+            const char code[] = "signed int short x;";
+            const char expected[] = "signed short x ;";
+            ASSERT_EQUALS(expected, tokenizeAndStringify(code));
+        }
+        {
+            const char code[] = "int signed short x;";
+            const char expected[] = "signed short x ;";
+            ASSERT_EQUALS(expected, tokenizeAndStringify(code));
+        }
+        {
+            const char code[] = "int short signed x;";
+            const char expected[] = "signed short x ;";
+            ASSERT_EQUALS(expected, tokenizeAndStringify(code));
+        }
     }
 
     void createLinks() {