tkqct skqc rkqct0 qkqct pkqc
4tpc 3tpct0 2tpct 1tpc 0tpct0
f3oct0 e3oct d3oc c3oct0 b3oct
qcoct pcoc ococt0 ncoct mcoc
1lnc 0lnct0 zlnct ylnc xlnct0