1; Not correct, e.g. 2
2(integer)
3
4; Minimum correct sentence, e.g. 2 1 2
5(integer integer integer)
6
7; Successively more complex sentences. e.g. 2 10 989080890\
8; 123213123
9(integer integer integer backslash integer)
10
11; 2 10 989080890 . 2132312
12(integer integer integer period integer)
13
14; 2 10 3 ^ 6
15(integer integer integer ^ integer)
16
17; 2 10 55 . 3333232432\
18; 23434234
19(integer integer integer period integer backslash integer)
20
21; 2 10 55 . 3333232432 . 12313 . 21 ^ 22332\
22; 23434234\
23; 454 . 23 ^ 32
24(integer integer integer period integer period integer ^ integer backslash integer backslash integer period integer ^ integer)