7cot 8cotb 9cotb7 adot bdotb

w3otb x3otb7 y3ot z3otb 03otb7

luptb7 mupt nuptb ouptb7 pupt

alqt blqtb clqtb7 dlqt elqtb

zbrtb 0brtb7 1brt 2brtb 3brtb7