diff --git a/txscript/data/script_tests.json b/txscript/data/script_tests.json
index 0134e8b490..2073055133 100644
--- a/txscript/data/script_tests.json
+++ b/txscript/data/script_tests.json
@@ -846,7 +846,7 @@
 ["'ab'", "CAT TRUE", "NONE", "ERR_INVALID_STACK_OPERATION", "CAT requires a second input arg"],
 ["'a' 'abcdefghijklmnop' DUP CAT DUP CAT DUP CAT DUP CAT DUP CAT DUP CAT DUP CAT", "CAT", "NONE", "ERR_PUSH_SIZE", "CAT must fail if the result would exceed max allowed stack item size"],
 
-["Substring related test coverage"],
+["SUBSTR test coverage"],
 ["'abcd' 1 0", "SUBSTR 'a' EQUAL", "NONE", "OK", "SUBSTR uses 0-based indices"],
 ["'abcd' 3 1", "SUBSTR 'bc' EQUAL", "NONE", "OK", "SUBSTR end index is exclusive"],
 ["'abcd' 1 1", "SUBSTR NOT", "NONE", "OK", "SUBSTR same index must produce empty byte push which is equivalent to FALSE"],
@@ -873,7 +873,7 @@
 ["'' 4 2147483648", "SUBSTR NOT", "NONE", "ERR_OUT_OF_RANGE", "SUBSTR with empty string must fail with start index >4 bytes"],
 ["'' 2147483648 4", "SUBSTR NOT", "NONE", "ERR_OUT_OF_RANGE", "SUBSTR with empty string must fail with end index >4 bytes"],
 
-["Left substring related test coverage"],
+["LEFT test coverage"],
 ["'abcd' 0", "LEFT NOT", "NONE", "OK", "LEFT index of zero must produce empty byte push which is equivalent to FALSE"],
 ["'abcd' 1", "LEFT 'a' EQUAL", "NONE", "OK", "LEFT uses 0-based end index"],
 ["'abcd' 4", "LEFT 'abcd' EQUAL", "NONE", "OK", "LEFT produces entire string when end index equals string length"],
@@ -889,7 +889,7 @@
 ["'abc' 4", "LEFT NOT", "NONE", "ERR_OVERFLOW_SUBSTR_INDEX", "LEFT must fail with index too large"],
 ["'' 2147483648", "LEFT NOT", "NONE", "ERR_OUT_OF_RANGE", "LEFT with empty string must fail with index >4 bytes"],
 
-["Right substring related test coverage"],
+["RIGHT test coverage"],
 ["'abcd' 4", "RIGHT NOT", "NONE", "OK", "RIGHT index equal to length must produce empty byte push which is equivalent to FALSE"],
 ["'abcd' 3", "RIGHT 'd' EQUAL", "NONE", "OK", "RIGHT uses 0-based start index"],
 ["'abcd' 0", "RIGHT 'abcd' EQUAL", "NONE", "OK", "RIGHT produces entire string when start index is zero"],
@@ -905,6 +905,36 @@
 ["'abc' 4", "RIGHT NOT", "NONE", "ERR_OVERFLOW_SUBSTR_INDEX", "RIGHT must fail with index too large"],
 ["'' 2147483648", "RIGHT NOT", "NONE", "ERR_OUT_OF_RANGE", "RIGHT with empty string must fail with index >4 bytes"],
 
+["SIZE test coverage"],
+["0", "SIZE 0 EQUAL", "NONE", "OK"],
+["1", "SIZE 1 EQUAL", "NONE", "OK"],
+["127", "SIZE 1 EQUAL", "NONE", "OK"],
+["128", "SIZE 2 EQUAL", "NONE", "OK"],
+["32767", "SIZE 2 EQUAL", "NONE", "OK"],
+["32768", "SIZE 3 EQUAL", "NONE", "OK"],
+["8388607", "SIZE 3 EQUAL", "NONE", "OK"],
+["8388608", "SIZE 4 EQUAL", "NONE", "OK"],
+["2147483647", "SIZE 4 EQUAL", "NONE", "OK"],
+["2147483648", "SIZE 5 EQUAL", "NONE", "OK"],
+["549755813887", "SIZE 5 EQUAL", "NONE", "OK"],
+["549755813888", "SIZE 6 EQUAL", "NONE", "OK"],
+["9223372036854775807", "SIZE 8 EQUAL", "NONE", "OK"],
+["-1", "SIZE 1 EQUAL", "NONE", "OK"],
+["-127", "SIZE 1 EQUAL", "NONE", "OK"],
+["-128", "SIZE 2 EQUAL", "NONE", "OK"],
+["-32767", "SIZE 2 EQUAL", "NONE", "OK"],
+["-32768", "SIZE 3 EQUAL", "NONE", "OK"],
+["-8388607", "SIZE 3 EQUAL", "NONE", "OK"],
+["-8388608", "SIZE 4 EQUAL", "NONE", "OK"],
+["-2147483647", "SIZE 4 EQUAL", "NONE", "OK"],
+["-2147483648", "SIZE 5 EQUAL", "NONE", "OK"],
+["-549755813887", "SIZE 5 EQUAL", "NONE", "OK"],
+["-549755813888", "SIZE 6 EQUAL", "NONE", "OK"],
+["-9223372036854775807", "SIZE 8 EQUAL", "NONE", "OK"],
+["'abcdefghijklmnopqrstuvwxyz'", "SIZE 26 EQUAL", "NONE", "OK"],
+["42", "SIZE 1 EQUALVERIFY 42 EQUAL", "NONE", "OK", "SIZE does not consume argument"],
+["NOP", "SIZE 1", "NONE", "ERR_INVALID_STACK_OPERATION"],
+
 ["Right bit rotation related test coverage"],
 ["-2147483647 1", "ROTR -1073741824 EQUAL", "NONE", "OK", "ROTR 0x80000001 >>> 1"],
 ["-2147483647 2", "ROTR 1610612736 EQUAL", "NONE", "OK", "ROTR 0x80000001 >>> 2"],
@@ -1127,34 +1157,7 @@
 ["0", "IF VER ELSE 1 ENDIF", "NONE", "OK", "VER non-functional (ok if not executed)"],
 ["0", "IF RESERVED ELSE 1 ENDIF", "NONE", "OK", "RESERVED ok in un-executed IF"],
 
-["0", "SIZE 0 EQUAL", "NONE", "OK"],
-["1", "SIZE 1 EQUAL", "NONE", "OK"],
-["127", "SIZE 1 EQUAL", "NONE", "OK"],
-["128", "SIZE 2 EQUAL", "NONE", "OK"],
-["32767", "SIZE 2 EQUAL", "NONE", "OK"],
-["32768", "SIZE 3 EQUAL", "NONE", "OK"],
-["8388607", "SIZE 3 EQUAL", "NONE", "OK"],
-["8388608", "SIZE 4 EQUAL", "NONE", "OK"],
-["2147483647", "SIZE 4 EQUAL", "NONE", "OK"],
-["2147483648", "SIZE 5 EQUAL", "NONE", "OK"],
-["549755813887", "SIZE 5 EQUAL", "NONE", "OK"],
-["549755813888", "SIZE 6 EQUAL", "NONE", "OK"],
-["9223372036854775807", "SIZE 8 EQUAL", "NONE", "OK"],
-["-1", "SIZE 1 EQUAL", "NONE", "OK"],
-["-127", "SIZE 1 EQUAL", "NONE", "OK"],
-["-128", "SIZE 2 EQUAL", "NONE", "OK"],
-["-32767", "SIZE 2 EQUAL", "NONE", "OK"],
-["-32768", "SIZE 3 EQUAL", "NONE", "OK"],
-["-8388607", "SIZE 3 EQUAL", "NONE", "OK"],
-["-8388608", "SIZE 4 EQUAL", "NONE", "OK"],
-["-2147483647", "SIZE 4 EQUAL", "NONE", "OK"],
-["-2147483648", "SIZE 5 EQUAL", "NONE", "OK"],
-["-549755813887", "SIZE 5 EQUAL", "NONE", "OK"],
-["-549755813888", "SIZE 6 EQUAL", "NONE", "OK"],
-["-9223372036854775807", "SIZE 8 EQUAL", "NONE", "OK"],
-["'abcdefghijklmnopqrstuvwxyz'", "SIZE 26 EQUAL", "NONE", "OK"],
-["42", "SIZE 1 EQUALVERIFY 42 EQUAL", "NONE", "OK", "SIZE does not consume argument"],
-["NOP", "SIZE 1", "NONE", "ERR_INVALID_STACK_OPERATION"],
+
 
 ["2 -2 ADD", "0 EQUAL", "NONE", "OK"],
 ["2147483647 -2147483647 ADD", "0 EQUAL", "NONE", "OK"],