1 UNSTRING ID-1
2? DELIMITED
2.1? BY
2.2? ALL
2.3 ID-2
2.3 リテラル-1
2.4? 
2.4+ 
2.4 OR
2.4.1? ALL
2.4.2 ID-3
2.4.2 リテラル-2
3 INTO
4+ 
4 ID-4
4.1? DELIMITER
4.1.1? IN
4.1.2 ID-5
4.1.3? COUNT
4.1.3.1? IN
4.1.3.2 ID-6
5? WITH
5.1 POINTER ID-7
6? TALLYING
6.1? IN
6.2 ID-8
7? ON
7.1 OVERFLOW 命令ステートメント-1
8? NOT
8.1? ON
8.2 OVERFLOW 命令ステートメント-2
9? END-UNSTRING