Problem: Guess what it does

Code: Guess+what+it+does/tails_1646492097

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)

: : \ ; : `, 13 
          + 19 
            , 237 
    $ 
  ~