diff --git a/assets/basic.js b/assets/basic.js
index 85816b4..8ebda94 100644
--- a/assets/basic.js
+++ b/assets/basic.js
@@ -1706,7 +1706,7 @@ FUNCTION_CALL (type: function, value: PRINT or something)
 // @returns BasicAST
 bF._EquationIllegalTokens = ["IF","THEN","ELSE","DEFUN","ON"];
 bF.isSemanticLiteral = function(token, state) {
-    return "]" == token || ")" == token ||
+    return undefined == token || "]" == token || ")" == token ||
             "qot" == state || "num" == state || "bool" == state || "lit" == state;
 }
 bF.parserDoDebugPrint = true;
diff --git a/assets/tbas/parser_wip.js b/assets/tbas/parser_wip.js
index 98b4d1c..9c2d1c3 100644
--- a/assets/tbas/parser_wip.js
+++ b/assets/tbas/parser_wip.js
@@ -660,7 +660,7 @@ bF._parseLit = function(lnum, tokens, states, recDepth, functionMode) {
 
 bF._EquationIllegalTokens = ["IF","THEN","ELSE","DEFUN","ON"];
 bF.isSemanticLiteral = function(token, state) {
-    return "]" == token || ")" == token ||
+    return undefined == token || "]" == token || ")" == token ||
             "qot" == state || "num" == state || "bool" == state || "lit" == state;
 }
 
@@ -756,6 +756,14 @@ let states8 = ["lit","num","op","num","op","num"];
 let tokens9 = ["NEXT"];
 let states9 = ["lit"];
 
+// PRINT -3
+let tokens10 = ["PRINT","-","3"];
+let states10 = ["lit","op","num"];
+
+// PRINT SPC(20-I);
+let tokens11 = ["PRINT","SPC","(","20","-","I",")",";"];
+let states11 = ["lit"],"lit","paren","num","op","lit","paren","sep"];
+
 try  {
     let trees = bF._parseTokens(lnum,
         tokens6,