tsev2 ssev rsev20 qsev2 psev

41dv 31dv20 21dv2 11dv 01dv20

fbdv20 ebdv2 dbdv cbdv20 bbdv2

qkcv2 pkcv okcv20 nkcv2 mkcv

1tbv 0tbv20 ztbv2 ytbv xtbv20