Problem: mix lines

Code: mix+lines/tails_1642075282

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)

+ (concat):[chr] 
    `' (transpose):[[chr]] 
        ;;@ (= allLines):[[chr]]