-er -up eee eeo eep eer eet eev eo- eoe eoo eop eor eot eou ep- epe epo epp epr ept epu ere ero erp err ert eru erv ete eto etp etr ett etu etv eu- eue eup eur eut euv eve evo evp evr evt evv oee oeo oep oer oet oo- ooo oop oor oot oov op- ope opo opp opr opt opv or- ore oro orp orr ort oru orv ot- ote oto otp otr ott otu otv ou- oue ouo oup our out ov- ove ovo ovp ovv p-p pee peo pep per pet peu pev poe poo pop por pot pou pov ppe ppo ppp ppr ppt ppu ppv pre pro prp prr prt pru prv pt- pte pto ptp ptr ptt ptu ptv pue pup pur put puu pve pvo pvp pvr pvt pvu pvv re- ree reo rep rer ret reu rev roe roo rop ror rot rou rov rpe rpo rpp rpr rpt rpu rpv rrp rrr rrt rru rte rto rtp rtr rtt rtu rtv rue ruo rup rur rut ruu ruv rve rvo rvp rvr rvt rvu rvv te- tee teo tep ter tet teu tev to- toe too top tor tot tou tov tpe tpo tpp tpr tpt tpu tpv tre tro trp trr trt tru trv tte tto ttp ttr ttt ttu ttv tue tuo tup tur tut tuu tuv tve tvo tvp tvr tvt tvu uee uep uer uet uoe uoo uop uor uot up- upe upo upp upr upt upu upv ur- ure uro urp urr urt uru ute uto utp utr utt utu utv uue uur uut uuu uve uvo uvu uvv v-e vee veo vep ver vet veu voe voo vop vor vot vou vov vpe vpo vpp vpr vpt vpu vre vrp vrr vrt vru vte vto vtr vtt vtu vtv vue vup vur vut vuv vvo vvr vvt vvv