-er -up eee een eeo eep eer eet en- ene enn eno enp enr ent enu eo- eoe eon eoo eop eor eot eou ep- epe epn epo epp epr ept epu ere ern ero erp err ert eru ete etn eto etp etr ett etu eu- eue eun eup eur eut ne- nee nen neo nep ner net neu nne nnn nno nnp nnt nnu no- noe non noo nop nor not nou npe npn npo npp npr npt npu nre nrn nro nrp nrr nrt nru nte ntn nto ntp ntr ntt ntu nue nun nuo nup nur nut nuu oee oen oeo oep oer oet on- one onn ono onp onr ont onu oo- oon ooo oop oor oot op- ope opn opo opp opr opt or- ore orn oro orp orr ort oru ot- ote otn oto otp otr ott otu ou- oue oun ouo oup our out p-p pee pen peo pep per pet peu pn- pne pnn pno pnp pnr pnt pnu poe pon poo pop por pot pou ppe ppn ppo ppp ppr ppt ppu pre prn pro prp prr prt pru pt- pte ptn pto ptp ptr ptt ptu pue pun pup pur put puu re- ree ren reo rep rer ret reu rnn rno rnp rnr rnt rnu roe ron roo rop ror rot rou rpe rpn rpo rpp rpr rpt rpu rrn rrp rrr rrt rru rte rtn rto rtp rtr rtt rtu rue run ruo rup rur rut ruu te- tee ten teo tep ter tet teu tne tnn tno tnp tnr tnt to- toe ton too top tor tot tou tpe tpn tpo tpp tpr tpt tpu tre trn tro trp trr trt tru tte ttn tto ttp ttr ttt ttu tue tun tuo tup tur tut tuu uee uen uep uer uet un- une unn uno unp unr unt unu uoe uon uoo uop uor uot up- upe upn upo upp upr upt upu ur- ure urn uro urp urr urt uru ute utn uto utp utr utt utu uue uun uur uut uuu