+do-if.sps:8: error: ELSE IF: This command cannot appear outside DO IF...END IF.
+
+do-if.sps:12: error: DO IF: Only one ELSE is allowed within DO IF...END IF.
+
+"do-if.sps:11.1-11.5: note: DO IF: This is the location of the previous ELSE clause.
+ 11 | ELSE.
+ | ^~~~~"
+
+"do-if.sps:10.1-10.8: note: DO IF: This is the location of the DO IF command.
+ 10 | DO IF 0.
+ | ^~~~~~~~"
+
+do-if.sps:17: error: DO IF: ELSE IF is not allowed following ELSE within DO IF...END IF.
+
+"do-if.sps:16.1-16.5: note: DO IF: This is the location of the previous ELSE clause.
+ 16 | ELSE.
+ | ^~~~~"
+
+"do-if.sps:15.1-15.8: note: DO IF: This is the location of the DO IF command.
+ 15 | DO IF 0.
+ | ^~~~~~~~"
+
+do-if.sps:20.7: error: DO IF: Syntax error at `!'.
+
+error: DO IF: Syntax error at end of input.