# code: http://golf.shinh.org/reveal.rb?uppercase+the+17th+letter/tails_1684721981&nbb
# target Nibbles version: 1.00
# commenter version: 0.1.2.181

#(implicit map):[chr] 
    `\ #(special scans):[[chr]] 
        fstLine #(@):[chr] 
        : #(foldop: cons):null 
    \B A 
    ? #(if/else):chr 
        == #(equal?):int 
            , #(length):int 
                | #(filter):[chr] 
                    `) #(swapped uncons):[chr] 
                        \ #(reverse):[chr] 
                            B #($):[chr] 
                    sets C 
                    \D 
                    D #($):chr 
            \E 
            16 #(integer):int 
        \F 
        `) #(to uppercase):chr 
            C #(@):chr 
        #(implicit arg = C):chr