a-a a-i a-t aaa aae aai aap aas aat aax aea aee aei aep aes aet aex ai- aia aie aii aip ais ait aix ap- apa ape api app aps apt apx as- asa ase asi asp ass ast asx at- ata ate ati atp ats att atx ax- axa axe axi axp axs axt axx eaa eae eai eap eas eat eax eea eee eep ees eet eex eia eie eii eip eis eit eix ep- epa epe epi epp eps ept epx es- esa ese esi esp ess est esx eta ete eti etp ets ett etx ex- exa exe exi exp exs ext exx ia- iaa iae iai iap ias iat ie- iea iee iei iep ies iet iex iia iie iii iip iis iit iix ipa ipe ipi ipp ips ipt ipx is- isa ise isi isp iss ist ita ite iti itp its itt itx ixe ixi p-p paa pae pai pap pas pat pax pea pee pei pep pes pet pex pia pie pii pip pis pit pix ppa ppe ppi ppp pps ppt ppx ps- psa pse psi psp pss pst psx pt- pta pte pti ptp pts ptt ptx pxe pxs pxt saa sae sai sap sas sat sax se- sea see sei sep ses set sex sia sie sii sip sis sit six spa spe spi spp sps spt spx ss- ssa sse ssi ssp sss sst ssx sta ste sti stp sts stt stx sxi sxs sxt t-x taa tae tai tap tas tat tax te- tea tee tei tep tes tet tex tia tie tii tip tis tit tix tpa tpe tpi tpp tps tpt tpx tsa tse tsi tsp tss tst tsx tta tte tti ttp tts ttt ttx txe txi txs txt xaa xap xas xat xee xep xes xet xex xia xie xii xis xit xix xpa xpe xpp xps xpt xsa xsi xsp xss xst xti xtp xts xtx xxi xxp xxx