Rt b1

Rt b1Rt b1Rt b1Rt b1Rt b1Rt b1
Rt b1Rt b1Rt b1Rt b1Rt b1Rt b1
Rt b1Rt b1Rt b1Rt b1Rt b1Rt b1Rt b1Rt b1Rt b1Rt b1Rt b1Rt b1Rt b1Rt b1Rt b1Rt b1Rt b1Rt b1Rt b1Rt b1Rt b1Rt b1Rt b1Rt b1Rt b1Rt b1Rt b1Rt b1Rt b1Rt b1Rt b1Rt b1Rt b1Rt b1Rt b1Rt b1