a-a a-b a-i a-t aaa aab aai aam aao aap aas aat ab- aba abb abi abm abo abp abs abt ai- aia aib aii aim aio aip ais ait ama amb ami amm amo amp ams amt aoa aob aoi aom aoo aop aos aot ap- apa apb api apm apo app aps apt as- asa asb asi asm aso asp ass ast at- ata atb ati atm ato atp ats att b-p baa bab bai bam bao bap bas bat bba bbb bbi bbm bbo bbp bbs bbt bi- bia bib bii bim bio bip bis bit bma bmb bmi bmm bmo bmp bms bmt boa bob boi bom boo bop bos bot bpa bpb bpi bpm bpo bpp bps bpt bsa bsb bsi bsm bso bsp bss bst bta btb bti btm bto btp bts btt ia- iaa iab iai iam iao iap ias iat iba ibb ibi ibm ibo ibp ibs ibt iia iib iii iim iio iip iis iit im- ima imb imi imm imo imp ims imt io- ioa iob ioi iom ioo iop ios iot ipa ipb ipi ipm ipo ipp ips ipt is- isa isb isi ism iso isp iss ist ita itb iti itm ito itp its itt m-o maa mab mai mam mao map mas mat mba mbb mbi mbm mbo mbp mbs mbt mi- mia mib mii mim mio mip mis mit mma mmb mmi mmm mmo mmp mms mmt moa mob moi mom moo mop mos mot mpa mpb mpi mpm mpo mpp mps mpt msa msb msi msm mso msp mss mst mta mtb mti mtm mto mtp mts mtt o-i oaa oab oai oam oao oap oas oat ob- oba obb obi obm obo obp obs obt oia oib oii oim oio oip ois oit om- oma omb omi omm omo omp oms omt oo- ooa oob ooi oom ooo oop oos oot op- opa opb opi opm opo opp ops opt os- osa osb osi osm oso osp oss ost ot- ota otb oti otm oto otp ots ott p-p paa pab pai pam pao pap pas pat pba pbb pbi pbm pbo pbp pbs pbt pia pib pii pim pio pip pis pit pma pmb pmi pmm pmo pmp pms pmt poa pob poi pom poo pop pos pot ppa ppb ppi ppm ppo ppp pps ppt ps- psa psb psi psm pso psp pss pst pt- pta ptb pti ptm pto ptp pts ptt saa sab sai sam sao sap sas sat sba sbb sbi sbm sbo sbp sbs sbt sia sib sii sim sio sip sis sit sma smb smi smm smo smp sms smt soa sob soi som soo sop sos sot spa spb spi spm spo spp sps spt ss- ssa ssb ssi ssm sso ssp sss sst sta stb sti stm sto stp sts stt taa tab tai tam tao tap tas tat tba tbb tbi tbm tbo tbp tbs tbt tia tib tii tim tio tip tis tit tma tmb tmi tmm tmo tmp tms tmt to- toa tob toi tom too top tos tot tpa tpb tpi tpm tpo tpp tps tpt tsa tsb tsi tsm tso tsp tss tst tta ttb tti ttm tto ttp tts ttt