# code: http://golf.shinh.org/reveal.rb?segs/tails_1642065557&nbb
# target Nibbles version: 0.21
# commenter version: 0.1.2.181

+ #(concat):[[chr]] 
    . #(map):[[[chr]]] 
        `\ #(special scans):[[chr]] 
            \ #(reverse):[chr] 
                fstLine #(@):[chr] 
            : #(foldop: cons):null 
        \A 
        `\ #(special scans):[[chr]] 
            \ #(reverse):[chr] 
                A #($):[chr] 
            : #(foldop: cons):null