zep2o 0ep2o5 1ep2 2ep2o 3ep2o5

o5p2o5 p5p2 q5p2o r5p2o5 s5p2

dwq2 ewq2o fwq2o5 gwq2 hwq2o

2mr2o 3mr2o5 4mr2 5mr2o 6mr2o5

rds2o5 sds2 tds2o uds2o5 vds2