-er a-a a-i a-t aaa aae aai aap aar aat aav aax aea aee aei aep aer aet aev aex ai- aia aie aii aip air ait aiv aix ap- apa ape api app apr apt apv apx ar- ara are ari arp arr art arv arx at- ata ate ati atp atr att atv atx av- ava ave avi avp avr avt avx ax- axa axe axi axp axr axt axv axx eaa eae eai eap ear eat eav eax eea eee eep eer eet eev eex eia eie eii eip eir eit eiv eix ep- epa epe epi epp epr ept epx era ere eri erp err ert erv eta ete eti etp etr ett etv etx eva eve evi evp evr evt evv ex- exa exe exi exp exr ext exx i-v ia- iaa iae iai iap iar iat iav ie- iea iee iei iep ier iet iev iex iia iie iii iip iir iit iix ipa ipe ipi ipp ipr ipt ipv ipx ir- ira ire iri irp irr irt irv irx ita ite iti itp itt itv itx iva ive ivi ivp ivr ivt ivv ivx ixe ixi p-p paa pae pai pap par pat pav pax pea pee pei pep per pet pev pex pia pie pii pip pir pit piv pix ppa ppe ppi ppp ppr ppt ppv ppx pra pre pri prp prr prt prv prx pt- pta pte pti ptp ptr ptt ptv ptx pva pve pvi pvp pvr pvt pvv pxe pxr pxt ra- raa rae rai rap rar rat rav rax re- rea ree rei rep rer ret rev rex ria rie rii rip rir rit riv rix rpa rpe rpi rpp rpr rpt rpv rpx rra rri rrp rrr rrt rta rte rti rtp rtr rtt rtv rtx rva rve rvi rvp rvr rvt rvv rxp rxr t-x taa tae tai tap tar tat tav tax te- tea tee tei tep ter tet tev tex tia tie tii tip tir tit tiv tix tpa tpe tpi tpp tpr tpt tpv tpx tra tre tri trp trr trt trv trx tta tte tti ttp ttr ttt ttv ttx tva tve tvi tvp tvr tvt tvx txe txi txt v-a v-e vaa vae vai vap var vat vav vax vea vee vei vep ver vet vex vi- via vie vii vip vir vit viv vix vpa vpe vpi vpp vpr vpt vpx vra vre vri vrp vrr vrt vta vte vti vtr vtt vtv vtx vva vvi vvr vvt vvv vxa vxr vxv xaa xap xar xat xav xee xep xer xet xev xex xia xie xii xit xiv xix xpa xpe xpp xpt xrt xrx xti xtp xtr xtv xtx xvi xvt xxi xxp xxv xxx