# code: http://golf.shinh.org/reveal.rb?Pandigital+Roman+Numerals/tails_1643878500&nbb
# target Nibbles version: 0.23
# commenter version: 0.1.2.181

#(implicit map):[[chr]] 
    `* #(nary cartesian product):[[[chr]]] 
        . #(map):[[[chr]]] 
            \ #(reverse):[[chr]] 
                `/ #(chunks of):[[chr]] 
                    ~ #(auto = 2):auto 
                    "IVXLCDM" #(string):[chr] 
            \A 
            ``p #(permutations):[[chr]] 
                A #($):[chr] 
    \C B 
    + #(concat):[chr] 
        #(implicit arg = C):[[chr]]