-ic a-a a-b a-c a-i a-t aaa aab aac aai aam aap aat ab- aba abb abc abi abm abp abt ac- aca acb acc aci acm acp act ai- aia aib aic aii aim aip ait ama amb amc ami amm amp amt ap- apa apb apc api apm app apt at- ata atb atc ati atm atp att b-p baa bab bac bai bam bap bat bba bbb bbc bbi bbm bbp bbt bca bcb bcc bci bcm bcp bct bi- bia bib bic bii bim bip bit bma bmb bmc bmi bmm bmp bmt bpa bpb bpc bpi bpm bpp bpt bta btb btc bti btm btp btt c-- caa cab cac cai cam cap cat cba cbb cbc cbi cbm cbp cbt cca ccb ccc cci ccm ccp cct ci- cia cib cic cii cim cip cit cma cmb cmc cmi cmm cmp cmt cpa cpb cpc cpi cpm cpp cpt cta ctb ctc cti ctm ctp ctt ia- iaa iab iac iai iam iap iat iba ibb ibc ibi ibm ibp ibt ica icb icc ici icm icp ict iia iib iic iii iim iip iit im- ima imb imc imi imm imp imt ipa ipb ipc ipi ipm ipp ipt ita itb itc iti itm itp itt maa mab mac mai mam map mat mba mbb mbc mbi mbm mbp mbt mc- mca mcb mcc mci mcm mcp mct mi- mia mib mic mii mim mip mit mma mmb mmc mmi mmm mmp mmt mpa mpb mpc mpi mpm mpp mpt mta mtb mtc mti mtm mtp mtt p-p paa pab pac pai pam pap pat pba pbb pbc pbi pbm pbp pbt pca pcb pcc pci pcm pcp pct pia pib pic pii pim pip pit pma pmb pmc pmi pmm pmp pmt ppa ppb ppc ppi ppm ppp ppt pt- pta ptb ptc pti ptm ptp ptt taa tab tac tai tam tap tat tba tbb tbc tbi tbm tbp tbt tca tcb tcc tci tcm tcp tct tia tib tic tii tim tip tit tma tmb tmc tmi tmm tmp tmt tpa tpb tpc tpi tpm tpp tpt tta ttb ttc tti ttm ttp ttt