# code: http://golf.shinh.org/reveal.rb?character+subsets/tails_1642268953&nbb
# target Nibbles version: 0.21
# commenter version: 0.1.2.181

#(implicit map):[[chr]] 
    `* #(nary cartesian product):[[chr]] 
        . #(map):[[chr]] 
            `$ #(uniq):[chr] 
                fstLine #(@):[chr] 
            \A 
            : #(append):[chr] 
                "\n" #(string):[chr] 
                A #($):chr 
    \C B 
    | #(filter):[chr] 
        #(implicit arg = C):[chr] 
        #\D 
        #(implicit arg = D):chr