hydpy gydp fydpyf eydpy dydp

s7cp r7cpyf q7cpy p7cp o7cpyf

3gcpyf 2gcpy 1gcp 0gcpyf zgcpy

eqbpy dqbp cqbpyf bqbpy aqbp

pzap ozapyf nzapy mzap lzapyf