-er c-- ccc cce cck ccr cct ccu ccv ce- cec cee cek cer cet ceu cev ckc ckt crc cre crk crr crt cru crv ctc cte ctk ctr ctt ctu ctv cuc cue cuk cur cut cuu cuv cvc cve cvk cvr cvt cvu cvv ec- ecc ece eck ecr ect ecu ecv eec eee eek eer eet eev ekc eke ekr ekt eku ekv erc ere erk err ert eru erv etc ete etk etr ett etu etv eu- euc eue eur eut euv evc eve evr evt evv k-t kcc kce kck kcr kct kcu ke- kec kee kek ker ket kev kkc kke kkk kkr kkt kku kkv krc krk krr krt kru krv ktc kte ktk ktr ktt ktu ktv kuc kue kuk kur kut kuu kvk kvr kvv rcc rce rcr rct rcu rcv re- rec ree rek rer ret reu rev rkc rke rkk rkt rku rkv rrc rrk rrr rrt rru rtc rte rtk rtr rtt rtu rtv ruc rue ruk rur rut ruu ruv rvc rve rvr rvt rvu rvv tcc tce tck tcr tct tcu tcv te- tec tee tek ter tet teu tev tkc tke tkk tkr tkt trc tre trk trr trt tru trv ttc tte ttk ttr ttt ttu ttv tuc tue tuk tur tut tuu tuv tvc tve tvk tvr tvt tvu ucc uce uck ucr uct ucu ucv uec uee uer uet ukc uke ukk ukr uku ur- urc ure urk urr urt uru utc ute utk utr utt utu utv uuc uue uur uut uuu uvc uve uvu uvv v-e vcc vce vcr vct vcu vec vee vek ver vet veu vkt vrc vre vrk vrr vrt vru vtc vte vtk vtr vtt vtu vtv vue vuk vur vut vuv vvc vvr vvt vvv