-er -ic c-- ccc cce cci ccr cct ccu ccv ccx ce- cec cee cei cer cet ceu cev cex ci- cic cie cii cir cit ciu civ cix crc cre cri crr crt cru crv crx ctc cte cti ctr ctt ctu ctv ctx cuc cue cui cur cut cuu cuv cvc cve cvi cvr cvt cvu cvv cvx cxc cxi cxr cxt cxv cxx ec- ecc ece eci ecr ect ecu ecv ecx eec eee eer eet eev eex eic eie eii eir eit eiu eiv eix erc ere eri err ert eru erv etc ete eti etr ett etu etv etx eu- euc eue eui eur eut euv eux evc eve evi evr evt evv ex- exc exe exi exr ext exu exx i-v icc ice ici icr ict icu icv ie- iec iee iei ier iet iev iex iic iie iii iir iit iiu iix ir- irc ire iri irr irt iru irv irx itc ite iti itt itu itv itx iu- iuc iue iui iur iut ivc ive ivi ivr ivt ivu ivv ivx ixc ixe ixi rcc rce rci rcr rct rcu rcv rcx re- rec ree rei rer ret reu rev rex ric rie rii rir rit riv rix rrc rri rrr rrt rru rtc rte rti rtr rtt rtu rtv rtx ruc rue rui rur rut ruu ruv rux rvc rve rvi rvr rvt rvu rvv rxr t-x tcc tce tci tcr tct tcu tcv tcx te- tec tee tei ter tet teu tev tex tic tie tii tir tit tiu tiv tix trc tre tri trr trt tru trv trx ttc tte tti ttr ttt ttu ttv ttx tuc tue tui tur tut tuu tuv tux tvc tve tvi tvr tvt tvu tvx txe txi txt txu ucc uce uci ucr uct ucu ucv uec uee uei uer uet uic uie uii uir uit uiu ur- urc ure uri urr urt uru urx utc ute uti utr utt utu utv utx uuc uue uur uut uuu uvc uve uvu uvv uxc uxr uxt uxu v-e vcc vce vci vcr vct vcu vcx vec vee vei ver vet veu vex vi- vic vie vii vir vit viu viv vix vrc vre vri vrr vrt vru vtc vte vti vtr vtt vtu vtv vtx vue vur vut vuv vvc vvi vvr vvt vvv vxr vxv xci xcr xcv xcx xee xer xet xeu xev xex xic xie xii xit xiu xiv xix xrc xrt xrx xtc xti xtr xtv xtx xue xui xuv xvi xvt xxi xxv xxx