y0br z0br0 00br0b 10br 20br0
nrcr0 orcr0b prcr qrcr0 rrcr0b
cidr0b didr eidr0 fidr0b gidr
18dr 28dr0 38dr0b 48dr 58dr0
qzer0 rzer0b szer tzer0 uzer0b