Just a thought there seem to be more than 30(!) of each. Say take calve alone..U can already multiply by two slicing with shin or forearm. Then the pushing and pulling variants(say i use my arm to slice ya calve, i can slice by pushing into it if i m on its same side or pull if opposite)[x2 again]. Then so many ways you position your other 3 limbs. Any answer? do u learn all of them or juz a favourite?