f9sxb2 e9sxb d9sx c9sxb2 b9sxb

qisxb pisx oisxb2 nisxb misx

1rrx 0rrxb2 zrrxb yrrx xrrxb2

c1qxb2 b1qxb a1qx 90qxb2 80qxb

naqxb maqx laqxb2 kaqxb jaqx