# code: http://golf.shinh.org/reveal.rb?squeeze+FIXED/tails_1644977543&nbb
# target Nibbles version: 0.23
# commenter version: 0.1.2.181

. #(map):[chr] 
    `= #(chunk by):[[chr]] 
        @ #(= fstLine):[chr] 
        $ #(= A):chr <--arg( A:chr ) 
    / #(foldr1):chr <--arg( B:[chr] ) 
        #(implicit arg = B):[chr] 
        #(implicit arg = D):chr <--arg( D:chr C:chr )