0: EMPTY
1: READ file
2: COND_GOTO [ELSE] 9
3: READ b1
4: COND_GOTO [ELSE] 9
5: READ b2
6: COND_GOTO [ELSE] 9
7: WRITE highlighter
8: GOTO [END] 10
9: WRITE highlighter
10: READ highlighter
11: GOTO [END] 12 RETURN