Problem: combination

Code: combination/tails_1642138544

Nibbles version: 0.2 | 0.21 | 0.22 | 0.23 | 0.24 | 0.25 | 1.00

Format: Compact | Simple | +Type | Table | JSON | .nbl (DeBruijn) | .nbl (names)

`_ (subsequences) 
    ;$ (= sndInt) 
    , (range from 1) 
        $ (= fstInt)