-ic a-a a-c a-i a-t aaa aac aae aai aak aas aat aax ac- aca acc ace aci ack acs act acx aea aec aee aei aek aes aet aex ai- aia aic aie aii aik ais ait aix aka akc ake aki akk aks as- asa asc ase asi ask ass ast asx at- ata atc ate ati ats att atx ax- axa axe axi axk axs axt axx c-- caa cac cae cai cak cas cat cax cca ccc cce cci cck ccs cct ccx ce- cea cec cee cei cek ces cet cex ci- cia cic cie cii cik cis cit cix cka ckc cki cks ckt ckx csa csc cse csi csk css cst csx cta ctc cte cti ctk cts ctt ctx cxc cxi cxk cxs cxt cxx eaa eac eae eai eak eas eat eax ec- eca ecc ece eci eck ecs ect ecx eea eec eee eek ees eet eex eia eic eie eii eik eis eit eix eka ekc eke eki eks ekt es- esa esc ese esi esk ess est esx eta etc ete eti etk ets ett etx ex- exa exc exe exi exs ext exx ia- iaa iac iae iai ias iat ica icc ice ici ick ics ict ie- iea iec iee iei iek ies iet iex iia iic iie iii iis iit iix ika ikc ike iki ikk iks ikt ikx is- isa isc ise isi isk iss ist ita itc ite iti itk its itt itx ixc ixe ixi k-t ka- kaa kac kae kai kak kas kat kax kca kcc kce kci kck kcs kct kcx ke- kea kec kee kei kek kes ket kex kia kic kie kii kik kis kit kix kkc kke kki kkk kks kkt ksa ksc kse ksi ksk kss kst kta ktc kte ktk kts ktt saa sac sae sai sak sas sat sax sca scc sce sci sck scs sct scx se- sea sec see sei sek ses set sex sia sic sie sii sik sis sit six sk- ska skc ske ski skk sks skt skx ss- ssa ssc sse ssi ssk sss sst ssx sta stc ste sti stk sts stt stx sxc sxi sxs sxt t-x taa tac tae tai tak tas tat tax tca tcc tce tci tck tcs tct tcx te- tea tec tee tei tek tes tet tex tia tic tie tii tik tis tit tix tka tkc tke tkk tks tkt tsa tsc tse tsi tsk tss tst tsx tta ttc tte tti ttk tts ttt ttx txe txi txk txs txt xaa xac xak xas xat xci xcx xee xes xet xex xia xic xie xii xis xit xix xke xks xsa xsc xsi xss xst xtc xti xts xtx xxi xxx