-ic a-a a-b a-c a-i a-t aaa aab aac aag aai aak aan aas aat ab- aba abb abc abg abi abk abn abs abt ac- aca acb acc acg aci ack acn acs act ag- aga agb agc agg agi agk agn ags agt ai- aia aib aic aig aii aik ain ais ait aka akb akc akg aki akk akn aks an- ana anb anc ang ani ank ann ans ant as- asa asb asc asg asi ask asn ass ast at- ata atb atc atg ati atn ats att baa bab bac bag bai bak ban bas bat bba bbb bbc bbg bbi bbk bbn bbs bbt bca bcb bcc bcg bci bck bcn bcs bct bga bgb bgc bgg bgi bgk bgn bgs bgt bi- bia bib bic big bii bik bin bis bit bka bkb bkc bkg bkk bkn bks bkt bna bnb bnc bng bni bnk bnn bns bnt bsa bsb bsc bsg bsi bsk bsn bss bst bta btb btc btg bti btk btn bts btt c-- caa cab cac cag cai cak can cas cat cba cbb cbc cbg cbi cbk cbn cbs cbt cca ccb ccc ccg cci cck ccn ccs cct cga cgb cgc cgg cgi cgn cgs cgt ci- cia cib cic cig cii cik cin cis cit cka ckb ckc cki cks ckt cn- cna cnb cnc cng cni cnn cns cnt csa csb csc csg csi csk csn css cst cta ctb ctc ctg cti ctk ctn cts ctt gaa gab gac gag gai gak gan gas gat gba gbc gbg gbi gbk gbn gbs gbt gca gcb gcc gcg gci gck gcn gcs gct gga ggb ggc ggg ggi ggn ggs ggt gia gib gic gig gii gik gin gis git gka gkb gkn gks gkt gna gnb gnc gni gnn gns gnt gsa gsb gsc gsg gsi gsk gsn gss gst gta gtb gtc gtg gti gtk gtn gts gtt ia- iaa iab iac iag iai ian ias iat iba ibb ibc ibg ibi ibk ibn ibs ibt ica icb icc icg ici ick icn ics ict iga igb igc igg igi igk ign igs igt iia iib iic iii iin iis iit ika ikb ikc iki ikk iks ikt in- ina inb inc ing ini ink inn ins int is- isa isb isc isg isi isk isn iss ist ita itb itc itg iti itk itn its itt k-t ka- kaa kab kac kag kai kak kan kas kat kba kbb kbc kbi kbk kbn kbs kca kcb kcc kcg kci kck kcn kcs kct kga kgb kgc kgi kgs kia kib kic kig kii kik kin kis kit kkb kkc kki kkk kkn kks kkt kn- kna knc kng kni knk knn knt ksa ksb ksc ksg ksi ksk ksn kss kst kta ktb ktc ktg ktk ktn kts ktt n-i naa nab nac nag nai nak nan nas nat nba nbb nbc nbg nbi nbk nbn nbs nbt nca ncb ncc ncg nci nck ncn ncs nct nga ngb ngc ngg ngi ngk ngn ngs ngt nia nib nic nig nii nik nin nis nit nka nkc nki nkk nkn nks nkt nna nnb nnc nng nni nnk nnn nns nnt nsa nsb nsc nsg nsi nsk nsn nss nst nta ntb ntc ntg nti ntk ntn nts ntt saa sab sac sag sai sak san sas sat sba sbb sbc sbg sbi sbk sbn sbs sbt sca scb scc scg sci sck scn scs sct sga sgb sgc sgg sgi sgk sgn sgs sgt sia sib sic sig sii sik sin sis sit sk- ska skb skc skg ski skk sks skt sna snb snc sng sni snk snn sns snt ss- ssa ssb ssc ssg ssi ssk ssn sss sst sta stb stc stg sti stk stn sts stt taa tab tac tag tai tak tan tas tat tba tbb tbc tbg tbi tbk tbn tbs tbt tca tcb tcc tcg tci tck tcn tcs tct tga tgb tgc tgg tgi tgk tgn tgs tgt tia tib tic tig tii tik tin tis tit tka tkb tkc tkg tkk tks tkt tna tnb tnc tng tni tnk tnn tns tnt tsa tsb tsc tsg tsi tsk tsn tss tst tta ttb ttc ttg tti ttk ttn tts ttt