-er -up eee eel eep eer eev eex eie eii eil eip eir eiu eiv eix ele eli ell elp elr elu elv elx ep- epe epi epl epp epr epu epx ere eri erl erp err eru erv eu- eue eui eul eup eur euv eux eve evi evl evp evr evv ex- exe exi exl exp exr exu exx i-v ie- iee iei iel iep ier iev iex iie iii iil iip iir iiu iix il- ile ili ill ilp ilr ilu ilv ilx ipe ipi ipl ipp ipr ipu ipv ipx ir- ire iri irl irp irr iru irv irx iu- iue iui iup iur ive ivi ivl ivp ivr ivu ivv ivx ixe ixi ixl l-p lee lei lel lep ler leu lev lex lie lii lil lip lir liu liv lix lle lli lll llp llr llu llv lpe lpi lpl lpp lpr lpu lpv lpx lri lrp lrr lru lrv lue lui lul lup lur luu luv lux lve lvi lvl lvp lvr lvv lvx lxi lxr lxv lxx p-p pee pei pel pep per peu pev pex pie pii pil pip pir piu piv pix ple pli pll plp plr plu plv plx ppe ppi ppl ppp ppr ppu ppv ppx pre pri prl prp prr pru prv prx pue pui pul pup pur puu pve pvi pvl pvp pvr pvu pvv pxe pxl pxr re- ree rei rel rep rer reu rev rex rie rii ril rip rir riv rix rle rli rll rlp rlr rlu rpe rpi rpl rpp rpr rpu rpv rpx rri rrl rrp rrr rru rue rui rup rur ruu ruv rux rve rvi rvl rvp rvr rvu rvv rxp rxr uee uei uel uep uer uie uii uil uip uir uiu ule uli ull ulp ulr ulu ulv up- upe upi upp upr upu upv upx ur- ure uri url urp urr uru urx uue uur uuu uve uvl uvu uvv uxr uxu v-e vee vei vel vep ver veu vex vi- vie vii vil vip vir viu viv vix vl- vle vll vlp vlv vpe vpi vpl vpp vpr vpu vpx vre vri vrp vrr vru vue vul vup vur vuv vvi vvr vvv vxl vxr vxv xee xel xep xer xeu xev xex xie xii xiu xiv xix xli xlr xlv xpe xpl xpp xrx xue xui xul xup xuv xvi xvl xxi xxl xxp xxv xxx