9z5npv 8z5np 7z5n 6z5npv 5z5np

k94np j94n i94npv h94np g94n

vi4n ui4npv ti4np si4n ri4npv

6r3npv 5r3np 4r3n 3r3npv 2r3np

h12np g12n f12npv e12np d12n