Example:
input: ['cars', 'for', 'potatoes', 'racs', 'four','scar', 'creams', 'scream']
=> output...: [["cars", "racs", "scar"], ["four"], ["for"], ["potatoes"], ["creams", "scream"]]
HINT: you can quickly...element.downcase.chars.sort}.values
end
words_list = ['cars','for','potatoes','racs','four','scar','creams','scream