# code: http://golf.shinh.org/reveal.rb?yesno/tails_1645185342&nbb
# target Nibbles version: 0.23
# commenter version: 0.1.2.181

+ #(concat):[chr] 
    . #(map):[[chr]] 
        fstLine #(@):[chr] 
        \A 
        : #(append):[chr] 
            A #($):chr 
            > #(drop):[chr] 
                % #(modulus):int 
                    + #(add):chr 
                        A #($):chr 
                        ~ #(auto = 1):auto 
                    4 #(integer):int 
                "\n" #(string):[chr]