Format 2: ADD statement with GIVING phrase

1 ADD
2+ 
2.0 identifier-1
2.0 literal-1
3? TO
4 identifier-2
4 literal-2
5 GIVING
6+ 
6 identifier-3
6.1? ROUNDED
7? ON
7.1 SIZE ERROR imperative-statement-1
8? NOT
8.1? ON
8.2 SIZE ERROR imperative-statement-2
9? END-ADD