1 UNSTRING identifier-1
2? DELIMITED
2.1? BY
2.2? ALL
2.3 identifier-2
2.3 literal-1
2.4? 
2.4+ 
2.4 OR
2.4.1? ALL
2.4.2 identifier-3
2.4.2 literal-2
3 INTO
4+ 
4 identifier-4
4.1? DELIMITER
4.1.1? IN
4.1.2 identifier-5
4.1.3? COUNT
4.1.3.1? IN
4.1.3.2 identifier-6
5? WITH
5.1 POINTER identifier-7
6? TALLYING
6.1? IN
6.2 identifier-8
7? ON
7.1 OVERFLOW imperative-statement-1
8? NOT
8.1? ON
8.2 OVERFLOW imperative-statement-2
9? END-UNSTRING