Problem: two weeks per column calendar

Code: two+weeks+per+column+calendar/tails_1658799407

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)

`/ (chunks of) 
    ~ (auto = 2) 
    : (append) 
        @ (= fstLine) 
        ;@ (= allLines)