# code: http://golf.shinh.org/reveal.rb?Ordered+text+permutations/tails_1644932607&nbb
# target Nibbles version: 0.23
# commenter version: 0.1.2.181

`* #(nary cartesian product):[[chr]] 
    . #(map):[[chr]] 
        fstLine #(@):[chr] 
        \A 
        fstLine #(_):[chr]