b-p bbb bbi bbm bbo bbp bbt bi- bib bii bim bio bip bit bmb bmi bmm bmo bmp bmt bob boi bom boo bop bot bpb bpi bpm bpo bpp bpt btb bti btm bto btp btt ibb ibi ibm ibo ibp ibt iib iii iim iio iip iit im- imb imi imm imo imp imt io- iob ioi iom ioo iop iot ipb ipi ipm ipo ipp ipt itb iti itm ito itp itt m-o mbb mbi mbm mbo mbp mbt mi- mib mii mim mio mip mit mmb mmi mmm mmo mmp mmt mob moi mom moo mop mot mpb mpi mpm mpo mpp mpt mtb mti mtm mto mtp mtt o-i ob- obb obi obm obo obp obt oib oii oim oio oip oit om- omb omi omm omo omp omt oo- oob ooi oom ooo oop oot op- opb opi opm opo opp opt ot- otb oti otm oto otp ott p-p pbb pbi pbm pbo pbp pbt pib pii pim pio pip pit pmb pmi pmm pmo pmp pmt pob poi pom poo pop pot ppb ppi ppm ppo ppp ppt pt- ptb pti ptm pto ptp ptt tbb tbi tbm tbo tbp tbt tib tii tim tio tip tit tmb tmi tmm tmo tmp tmt to- tob toi tom too top tot tpb tpi tpm tpo tpp tpt ttb tti ttm tto ttp ttt