Textonyms

var words = ARGF.grep(/^[[:alpha:]]+\z/)
 
var dials = words.group_by {
    .tr('abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ',
        '2223334445556667777888999922233344455566677778889999')
}
 
var textonyms = dials.grep_v { .len > 1 }
 
say <<-"END"
    There are #{words.len} words which can be represented by the digit key mapping.
    They require #{dials.len} digit combinations to represent them.
    #{textonyms.len} digit combinations represent Textonyms.
    END
 
say "Top 5 in ambiguity:"
say textonyms.sort_by { |_,v| -v.len }.first(5).join("\n")
 
say "\nTop 5 in length:"
say textonyms.sort_by { |k,_| -k.len }.first(5).join("\n")

Output:

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