b-p bbb bbm bbn bbo bbp bbr bbt bmb bmm bmn bmo bmp bmr bmt bnb bnn bno bnp bnr bnt bob bom bon boo bop bor bot bpb bpm bpn bpo bpp bpr bpt brb brm brn bro brp brr brt btb btm btn bto btp btr btt m-o m-r mbb mbm mbo mbp mbr mbt mmb mmm mmn mmo mmp mmr mmt mnb mnm mnn mno mnp mnr mnt mob mom mon moo mop mor mot mpb mpm mpn mpo mpp mpr mpt mrb mrm mrn mro mrp mrr mrt mtb mtm mtn mto mtp mtr mtt nbb nbm nbn nbo nbp nbr nbt nmb nmm nmn nmo nmp nmr nmt nnb nnm nnn nno nnp nnt no- nob nom non noo nop nor not npb npm npn npo npp npr npt nrb nrm nrn nro nrp nrr nrt ntb ntm ntn nto ntp ntr ntt ob- obb obm obn obo obp obr obt om- omb omm omn omo omp omr omt on- onb onn ono onp onr ont oo- oob oom oon ooo oop oor oot op- opb opm opn opo opp opr opt or- orb orm orn oro orp orr ort ot- otb otm otn oto otp otr ott p-p pbb pbm pbn pbo pbp pbr pbt pmb pmm pmn pmo pmp pmr pmt pn- pnb pnm pnn pno pnp pnr pnt pob pom pon poo pop por pot ppb ppm ppn ppo ppp ppr ppt prb prm prn pro prp prr prt pt- ptb ptm ptn pto ptp ptr ptt rbb rbm rbn rbo rbp rbr rbt rmb rmm rmn rmo rmp rmr rmt rnb rnm rnn rno rnp rnr rnt rob rom ron roo rop ror rot rpb rpm rpn rpo rpp rpr rpt rrb rrm rrn rrp rrr rrt rtb rtm rtn rto rtp rtr rtt tbb tbm tbn tbo tbp tbr tbt tmb tmm tmn tmo tmp tmr tmt tnb tnm tnn tno tnp tnr tnt to- tob tom ton too top tor tot tpb tpm tpn tpo tpp tpr tpt trb trm trn tro trp trr trt ttb ttm ttn tto ttp ttr ttt