-ic a-a a-b a-c a-i a-t aaa aab aac aai aam aan aar aat ab- aba abb abc abi abm abn abr abt ac- aca acb acc aci acm acn acr act ai- aia aib aic aii aim ain air ait ama amb amc ami amm amn amr amt an- ana anb anc ani anm ann anr ant ar- ara arb arc ari arm arn arr art at- ata atb atc ati atm atn atr att baa bab bac bai bam ban bar bat bba bbb bbc bbi bbm bbn bbr bbt bca bcb bcc bci bcm bcn bcr bct bi- bia bib bic bii bim bin bir bit bma bmb bmc bmi bmm bmn bmr bmt bna bnb bnc bni bnn bnr bnt bra brb bri brm brn brr brt bta btb btc bti btm btn btr btt c-- caa cab cac cai cam can car cat cba cbb cbc cbi cbm cbn cbr cbt cca ccb ccc cci ccm ccn ccr cct ci- cia cib cic cii cim cin cir cit cma cmb cmc cmi cmm cmn cmr cmt cn- cna cnb cnc cni cnm cnn cnr cnt cra crb crc cri crm crn crr crt cta ctb ctc cti ctm ctn ctr ctt ia- iaa iab iac iai iam ian iar iat iba ibb ibc ibi ibm ibn ibr ibt ica icb icc ici icm icn icr ict iia iib iic iii iim iin iir iit im- ima imb imc imi imm imn imt in- ina inb inc ini inm inn inr int ir- ira irb irc iri irm irn irr irt ita itb itc iti itm itn itt m-r maa mab mac mai mam man mar mat mba mbb mbc mbi mbm mbr mbt mc- mca mcb mcc mci mcm mcn mcr mct mi- mia mib mic mii mim min mir mit mma mmb mmc mmi mmm mmn mmr mmt mna mnb mnc mni mnm mnn mnr mnt mra mrb mrc mri mrm mrn mrr mrt mta mtb mtc mti mtm mtn mtr mtt n-i naa nab nac nai nam nan nar nat nba nbb nbc nbi nbm nbn nbr nbt nca ncb ncc nci ncm ncn ncr nct nia nib nic nii nim nin nir nit nma nmb nmc nmi nmm nmn nmr nmt nna nnb nnc nni nnm nnn nnt nra nrb nrc nri nrm nrn nrr nrt nta ntb ntc nti ntm ntn ntr ntt ra- raa rab rac rai ram ran rar rat rba rbb rbc rbi rbm rbn rbr rbt rca rcb rcc rci rcm rcn rcr rct ria rib ric rii rim rin rir rit rma rmb rmc rmi rmm rmn rmr rmt rna rnb rnc rni rnm rnn rnr rnt rra rrb rrc rri rrm rrn rrr rrt rta rtb rtc rti rtm rtn rtr rtt taa tab tac tai tam tan tar tat tba tbb tbc tbi tbm tbn tbr tbt tca tcb tcc tci tcm tcn tcr tct tia tib tic tii tim tin tir tit tma tmb tmc tmi tmm tmn tmr tmt tna tnb tnc tni tnm tnn tnr tnt tra trb trc tri trm trn trr trt tta ttb ttc tti ttm ttn ttr ttt