[Haskell-cafe] Re-order type

Hello, exists any algorithm to determine how terms can be changed to safisty the type of one function? example: f:: a-> b -> c -> (b,c,a) f1 :: c -> a -> d In my first function "f" i want assign the output "c" and "a" for to input of function "f1". I searched for any solution, but i didn't find any anything. One clue i have found is "minimal edit distance algorithm" for 2 strings. Perhaps if i convert de output type of "f" to one string, and de input of "f1" to another string and then use this algorithm , i will get one "dirty" solution... I'm open to any sugestion.