# code: http://golf.shinh.org/reveal.rb?Aegilops/tails_1645445427&nbb
# target Nibbles version: 0.23
# commenter version: 0.1.2.181

: #(append):[[[chr]]] 
    | #(filter):[[chr]] 
        % #(split (remove empties)):[[chr]] 
            fstLine #(@):[chr] 
            ~ #(auto = words):auto 
        \A 
        == #(equal?):int 
            ; #(save):[chr] 
                . #(map):[chr] 
                    A #($):[chr] 
                    \B 
                    `( #(to lowercase):chr 
                        B #($):chr 
            sets C 
            \D 
            `< #(sort):[chr] 
                C #(@):[chr] 
    ~ #(auto = []):auto