-er -up eee eeo eep eer ees eet eex eie eii eio eip eir eis eit eiu eix eo- eoe eoi eoo eop eor eos eot eou ep- epe epi epo epp epr eps ept epu epx ere eri ero erp err ers ert eru es- ese esi eso esp esr ess est esu esx ete eti eto etp etr ets ett etu etx eu- eue eui eup eur eus eut eux ex- exe exi exo exp exr exs ext exu exx ie- iee iei iep ier ies iet iex iie iii iio iip iir iis iit iiu iix io- ioe ioi ioo iop ior ios iot iou ipe ipi ipo ipp ipr ips ipt ipu ipx ir- ire iri iro irp irr irs irt iru irx is- ise isi iso isp isr iss ist isu ite iti ito itp its itt itu itx iu- iue iui iup iur ius iut ixe ixi o-i oee oei oeo oep oer oes oet oex oie oii oio oip oir ois oit oiu oo- ooi ooo oop oor oos oot oox op- ope opi opo opp opr ops opt opx or- ore ori oro orp orr ors ort oru orx os- ose osi oso osp osr oss ost osu osx ot- ote oti oto otp otr ots ott otu ou- oue oui ouo oup our ous out ox- oxi oxo oxt oxx p-p pee pei peo pep per pes pet peu pex pie pii pio pip pir pis pit piu pix poe poi poo pop por pos pot pou pox ppe ppi ppo ppp ppr pps ppt ppu ppx pre pri pro prp prr prs prt pru prx ps- pse psi pso psp psr pss pst psu psx pt- pte pti pto ptp ptr pts ptt ptu ptx pue pui pup pur pus put puu pxe pxr pxs pxt re- ree rei reo rep rer res ret reu rex rie rii rio rip rir ris rit rix roe roi roo rop ror ros rot rou rox rpe rpi rpo rpp rpr rps rpt rpu rpx rri rrp rrr rrs rrt rru rse rsi rso rsp rsr rss rst rsu rsx rte rti rto rtp rtr rts rtt rtu rtx rue rui ruo rup rur rus rut ruu rux rxp rxr rxs se- see sei seo sep ser ses set seu sex sie sii sio sip sir sis sit siu six soe soi soo sop sor sos sot sou sox spe spi spo spp spr sps spt spu spx sr- sre sri sro srp srr srs srt srx ss- sse ssi sso ssp ssr sss sst ssu ssx ste sti sto stp str sts stt stu stx sue sui suo sup sur sus sut suu sux sxi sxs sxt sxu t-x te- tee tei teo tep ter tes tet teu tex tie tii tio tip tir tis tit tiu tix to- toe toi too top tor tos tot tou tox tpe tpi tpo tpp tpr tps tpt tpu tpx tre tri tro trp trr trs trt tru trx tse tsi tso tsp tsr tss tst tsu tsx tte tti tto ttp ttr tts ttt ttu ttx tue tui tuo tup tur tus tut tuu tux txe txi txs txt txu uee uei uep uer ues uet uie uii uio uip uir uis uit uiu uoe uoo uop uor uos uot uox up- upe upi upo upp upr ups upt upu upx ur- ure uri uro urp urr urs urt uru urx use usi uso usp usr uss ust usu usx ute uti uto utp utr uts utt utu utx uue uur uus uut uuu uxo uxr uxt uxu xee xep xer xes xet xeu xex xie xii xio xis xit xiu xix xoi xoo xop xor xos xot xox xpe xpo xpp xps xpt xrt xrx xsi xsp xss xst xti xtp xtr xts xtx xue xui xup xus xxi xxo xxp xxx