-ic a-a a-c a-i a-t aaa aac aae aai aap aat aax ac- aca acc ace aci acp act acx aea aec aee aei aep aet aex ai- aia aic aie aii aip ait aix ap- apa apc ape api app apt apx at- ata atc ate ati atp att atx ax- axa axe axi axp axt axx c-- caa cac cae cai cap cat cax cca ccc cce cci ccp cct ccx ce- cea cec cee cei cep cet cex ci- cia cic cie cii cip cit cix cpa cpc cpe cpi cpp cpt cpx cta ctc cte cti ctp ctt ctx cxc cxi cxp cxt cxx eaa eac eae eai eap eat eax ec- eca ecc ece eci ect ecx eea eec eee eep eet eex eia eic eie eii eip eit eix ep- epa epc epe epi epp ept epx eta etc ete eti etp ett etx ex- exa exc exe exi exp ext exx ia- iaa iac iae iai iap iat ica icc ice ici icp ict ie- iea iec iee iei iep iet iex iia iic iie iii iip iit iix ipa ipc ipe ipi ipp ipt ipx ita itc ite iti itp itt itx ixc ixe ixi p-p paa pac pae pai pap pat pax pca pcc pce pci pcp pct pcx pea pec pee pei pep pet pex pia pic pie pii pip pit pix ppa ppc ppe ppi ppp ppt ppx pt- pta ptc pte pti ptp ptt ptx pxc pxe pxt t-x taa tac tae tai tap tat tax tca tcc tce tci tcp tct tcx te- tea tec tee tei tep tet tex tia tic tie tii tip tit tix tpa tpc tpe tpi tpp tpt tpx tta ttc tte tti ttp ttt ttx txe txi txt xaa xac xap xat xci xcp xcx xee xep xet xex xia xic xie xii xit xix xpa xpc xpe xpp xpt xtc xti xtp xtx xxi xxp xxx