-ic a-a a-b a-c a-i a-t aaa aab aac aai aak aam aar aat ab- aba abb abc abi abk abm abr abt ac- aca acb acc aci ack acm acr act ai- aia aib aic aii aik aim air ait aka akb akc aki akk akm akr ama amb amc ami amk amm amr amt ar- ara arb arc ari ark arm arr art at- ata atb atc ati atm atr att baa bab bac bai bak bam bar bat bba bbb bbc bbi bbk bbm bbr bbt bca bcb bcc bci bck bcm bcr bct bi- bia bib bic bii bik bim bir bit bka bkb bkc bkk bkm bkr bkt bma bmb bmc bmi bmk bmm bmr bmt bra brb bri brk brm brr brt bta btb btc bti btk btm btr btt c-- caa cab cac cai cak cam car cat cba cbb cbc cbi cbk cbm cbr cbt cca ccb ccc cci cck ccm ccr cct ci- cia cib cic cii cik cim cir cit cka ckb ckc cki ckm ckt cma cmb cmc cmi cmk cmm cmr cmt cra crb crc cri crk crm crr crt cta ctb ctc cti ctk ctm ctr ctt ia- iaa iab iac iai iam iar iat iba ibb ibc ibi ibk ibm ibr ibt ica icb icc ici ick icm icr ict iia iib iic iii iim iir iit ika ikb ikc iki ikk ikr ikt im- ima imb imc imi imm imt ir- ira irb irc iri irk irm irr irt ita itb itc iti itk itm itt k-t ka- kaa kab kac kai kak kam kar kat kba kbb kbc kbi kbk kbm kbr kca kcb kcc kci kck kcm kcr kct kia kib kic kii kik kim kir kit kkb kkc kki kkk kkm kkr kkt kma kmb kmc kmi kmk kmm kmt kra krc kri krk krr krt kta ktb ktc ktk ktm ktr ktt m-r maa mab mac mai mak mam mar mat mba mbb mbc mbi mbk mbm mbr mbt mc- mca mcb mcc mci mck mcm mcr mct mi- mia mib mic mii mik mim mir mit mka mkb mkc mkk mkm mkr mkt mma mmb mmc mmi mmk mmm mmr mmt mra mrb mrc mri mrk mrm mrr mrt mta mtb mtc mti mtk mtm mtr mtt ra- raa rab rac rai rak ram rar rat rba rbb rbc rbi rbk rbm rbr rbt rca rcb rcc rci rcm rcr rct ria rib ric rii rik rim rir rit rkb rkc rkk rkm rkt rma rmb rmc rmi rmm rmr rmt rra rrb rrc rri rrk rrm rrr rrt rta rtb rtc rti rtk rtm rtr rtt taa tab tac tai tak tam tar tat tba tbb tbc tbi tbk tbm tbr tbt tca tcb tcc tci tck tcm tcr tct tia tib tic tii tik tim tir tit tka tkb tkc tkk tkm tkr tkt tma tmb tmc tmi tmk tmm tmr tmt tra trb trc tri trk trm trr trt tta ttb ttc tti ttk ttm ttr ttt