# code: http://golf.shinh.org/reveal.rb?format+me/tails_1752648324&nbb
# target Nibbles version: 1.00
# commenter version: 0.1.6.187

#(implicit map):[[chr]] 
    % #(split (remove empties)):[[chr]] 
        `( #(uncons):[chr] -->let( A:[[chr]] ) 
            % #(split (remove empties)):[[chr]] 
                @ #(= fstLine):[chr] 
                "," #(string):[chr] 
        ~ #(auto = words):auto 
    ? #(if/else):[chr] <--arg( C:[chr] B:[chr] ) 
        `r #(read int):int 
            $ #(= C):[chr] 
        = #(subscript (wrapped)):[chr] <--arg( D:int ) 
            $ #(= D):int 
            #(implicit arg = A):[[chr]] 
        #(implicit arg = C):[chr]