-er -up a-a a-t aaa aae aap aar aat aau aax aea aee aep aer aet aeu aex ap- apa ape app apr apt apu apx ar- ara are arp arr art aru arx at- ata ate atp atr att atu atx au- aua aue aup aur aut aux ax- axa axe axp axr axt axx eaa eae eap ear eat eau eax eea eee eep eer eet eex ep- epa epe epp epr ept epu epx era ere erp err ert eru eta ete etp etr ett etu etx eu- eua eue eup eur eut eux ex- exa exe exp exr ext exu exx p-p paa pae pap par pat pau pax pea pee pep per pet peu pex ppa ppe ppp ppr ppt ppu ppx pra pre prp prr prt pru prx pt- pta pte ptp ptr ptt ptu ptx pua pue pup pur put puu pxe pxr pxt ra- raa rae rap rar rat rau rax re- rea ree rep rer ret reu rex rpa rpe rpp rpr rpt rpu rpx rra rrp rrr rrt rru rta rte rtp rtr rtt rtu rtx rua rue rup rur rut ruu rux rxp rxr t-x taa tae tap tar tat tau tax te- tea tee tep ter tet teu tex tpa tpe tpp tpr tpt tpu tpx tra tre trp trr trt tru trx tta tte ttp ttr ttt ttu ttx tua tue tup tur tut tuu tux txe txt txu ua- uaa uae uap uar uat uau uea uee uep uer uet up- upa upe upp upr upt upu upx ur- ura ure urp urr urt uru urx uta ute utp utr utt utu utx uua uue uur uut uuu uxr uxt uxu xaa xap xar xat xau xee xep xer xet xeu xex xpa xpe xpp xpt xrt xrx xtp xtr xtx xue xup xxp xxx