-ic a-a a-b a-c a-i a-t aaa aab aac aag aai aak aam aat ab- aba abb abc abg abi abk abm abt ac- aca acb acc acg aci ack acm act ag- aga agb agc agg agi agk agm agt ai- aia aib aic aig aii aik aim ait aka akb akc akg aki akk akm ama amb amc amg ami amk amm amt at- ata atb atc atg ati atm att baa bab bac bag bai bak bam bat bba bbb bbc bbg bbi bbk bbm bbt bca bcb bcc bcg bci bck bcm bct bga bgb bgc bgg bgi bgk bgm bgt bi- bia bib bic big bii bik bim bit bka bkb bkc bkg bkk bkm bkt bma bmb bmc bmg bmi bmk bmm bmt bta btb btc btg bti btk btm btt c-- caa cab cac cag cai cak cam cat cba cbb cbc cbg cbi cbk cbm cbt cca ccb ccc ccg cci cck ccm cct cga cgb cgc cgg cgi cgm cgt ci- cia cib cic cig cii cik cim cit cka ckb ckc cki ckm ckt cma cmb cmc cmg cmi cmk cmm cmt cta ctb ctc ctg cti ctk ctm ctt gaa gab gac gag gai gak gam gat gba gbc gbg gbi gbk gbm gbt gca gcb gcc gcg gci gck gcm gct gga ggb ggc ggg ggi ggm ggt gia gib gic gig gii gik gim git gka gkb gkm gkt gma gmb gmc gmg gmi gmm gmt gta gtb gtc gtg gti gtk gtm gtt ia- iaa iab iac iag iai iam iat iba ibb ibc ibg ibi ibk ibm ibt ica icb icc icg ici ick icm ict iga igb igc igg igi igk igm igt iia iib iic iii iim iit ika ikb ikc iki ikk ikt im- ima imb imc img imi imm imt ita itb itc itg iti itk itm itt k-t ka- kaa kab kac kag kai kak kam kat kba kbb kbc kbi kbk kbm kca kcb kcc kcg kci kck kcm kct kga kgb kgc kgi kgm kia kib kic kig kii kik kim kit kkb kkc kki kkk kkm kkt kma kmb kmc kmg kmi kmk kmm kmt kta ktb ktc ktg ktk ktm ktt maa mab mac mag mai mak mam mat mba mbb mbc mbg mbi mbk mbm mbt mc- mca mcb mcc mcg mci mck mcm mct mga mgb mgc mgi mgk mgm mgt mi- mia mib mic mig mii mik mim mit mka mkb mkc mkg mkk mkm mkt mma mmb mmc mmg mmi mmk mmm mmt mta mtb mtc mtg mti mtk mtm mtt taa tab tac tag tai tak tam tat tba tbb tbc tbg tbi tbk tbm tbt tca tcb tcc tcg tci tck tcm tct tga tgb tgc tgg tgi tgk tgm tgt tia tib tic tig tii tik tim tit tka tkb tkc tkg tkk tkm tkt tma tmb tmc tmg tmi tmk tmm tmt tta ttb ttc ttg tti ttk ttm ttt