-ic a-a a-c a-i a-t aaa aac aae aai aap aas aat aax ac- aca acc ace aci acp acs act acx aea aec aee aei aep aes aet aex ai- aia aic aie aii aip ais ait aix ap- apa apc ape api app aps apt apx as- asa asc ase asi asp ass ast asx at- ata atc ate ati atp ats att atx ax- axa axe axi axp axs axt axx c-- caa cac cae cai cap cas cat cax cca ccc cce cci ccp ccs cct ccx ce- cea cec cee cei cep ces cet cex ci- cia cic cie cii cip cis cit cix cpa cpc cpe cpi cpp cps cpt cpx csa csc cse csi csp css cst csx cta ctc cte cti ctp cts ctt ctx cxc cxi cxp cxs cxt cxx eaa eac eae eai eap eas eat eax ec- eca ecc ece eci ecs ect ecx eea eec eee eep ees eet eex eia eic eie eii eip eis eit eix ep- epa epc epe epi epp eps ept epx es- esa esc ese esi esp ess est esx eta etc ete eti etp ets ett etx ex- exa exc exe exi exp exs ext exx ia- iaa iac iae iai iap ias iat ica icc ice ici icp ics ict ie- iea iec iee iei iep ies iet iex iia iic iie iii iip iis iit iix ipa ipc ipe ipi ipp ips ipt ipx is- isa isc ise isi isp iss ist ita itc ite iti itp its itt itx ixc ixe ixi p-p paa pac pae pai pap pas pat pax pca pcc pce pci pcp pcs pct pcx pea pec pee pei pep pes pet pex pia pic pie pii pip pis pit pix ppa ppc ppe ppi ppp pps ppt ppx ps- psa psc pse psi psp pss pst psx pt- pta ptc pte pti ptp pts ptt ptx pxc pxe pxs pxt saa sac sae sai sap sas sat sax sca scc sce sci scp scs sct scx se- sea sec see sei sep ses set sex sia sic sie sii sip sis sit six spa spc spe spi spp sps spt spx ss- ssa ssc sse ssi ssp sss sst ssx sta stc ste sti stp sts stt stx sxc sxi sxs sxt t-x taa tac tae tai tap tas tat tax tca tcc tce tci tcp tcs tct tcx te- tea tec tee tei tep tes tet tex tia tic tie tii tip tis tit tix tpa tpc tpe tpi tpp tps tpt tpx tsa tsc tse tsi tsp tss tst tsx tta ttc tte tti ttp tts ttt ttx txe txi txs txt xaa xac xap xas xat xci xcp xcx xee xep xes xet xex xia xic xie xii xis xit xix xpa xpc xpe xpp xps xpt xsa xsc xsi xsp xss xst xtc xti xtp xts xtx xxi xxp xxx