-er -ic c-- ccc cce cci ccr cct ccu ccx ce- cec cee cei cer cet ceu cex ci- cic cie cii cir cit ciu cix crc cre cri crr crt cru crx ctc cte cti ctr ctt ctu ctx cuc cue cui cur cut cuu cxc cxi cxr cxt cxx ec- ecc ece eci ecr ect ecu ecx eec eee eer eet eex eic eie eii eir eit eiu eix erc ere eri err ert eru etc ete eti etr ett etu etx eu- euc eue eui eur eut eux ex- exc exe exi exr ext exu exx icc ice ici icr ict icu ie- iec iee iei ier iet iex iic iie iii iir iit iiu iix ir- irc ire iri irr irt iru irx itc ite iti itt itu itx iu- iuc iue iui iur iut ixc ixe ixi rcc rce rci rcr rct rcu rcx re- rec ree rei rer ret reu rex ric rie rii rir rit rix rrc rri rrr rrt rru rtc rte rti rtr rtt rtu rtx ruc rue rui rur rut ruu rux rxr t-x tcc tce tci tcr tct tcu tcx te- tec tee tei ter tet teu tex tic tie tii tir tit tiu tix trc tre tri trr trt tru trx ttc tte tti ttr ttt ttu ttx tuc tue tui tur tut tuu tux txe txi txt txu ucc uce uci ucr uct ucu 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 utx uuc uue uur uut uuu uxc uxr uxt uxu xci xcr xcx xee xer xet xeu xex xic xie xii xit xiu xix xrc xrt xrx xtc xti xtr xtx xue xui xxi xxx