yco2 zco2q 0co2q8 1co2 2co2q

n3o2q o3o2q8 p3o2 q3o2q r3o2q8

cup2q8 dup2 eup2q fup2q8 gup2

1kq2 2kq2q 3kq2q8 4kq2 5kq2q

qbr2q rbr2q8 sbr2 tbr2q ubr2q8