-er c-- ccc cce cch cck cco ccr ccs ccu ce- cec cee ceh cek ceo cer ces ceu ch- chc che chh chk cho chr chs chu ckc ckh cko cks co- coc coe coh cok coo cor cos cou crc cre crh crk cro crr crs cru csc cse csh csk cso csr css csu cuc cue cuh cuk cuo cur cus cuu ec- ecc ece ech eck eco ecr ecs ecu eec eee eek eeo eer ees ehc ehe ehh eho ehr ehs ehu ekc eke ekh eko ekr eks eku eo- eoc eoe eoh eok eoo eor eos eou erc ere erh erk ero err ers eru es- esc ese esh esk eso esr ess esu eu- euc eue eur eus hcc hce hch hck hco hcr hcs he- hec hee heh hek heo her hes heu hhc hhe hhh hhk hho hhr hhs hhu hkh hkk hko hkr hks hku hoc hoe hoh hok hoo hor hos hou hr- hrc hre hrh hrk hro hrr hrs hru hsc hse hsh hsk hsr hss hsu huc hue huh huk huo hur hus huu kcc kce kch kck kcr kcs kcu ke- kec kee keh kek keo ker kes khe khh khk kho khr khs khu kkc kke kkh kkk kkr kks kku koc koe koh kok koo kor kos kou krc krk kro krr krs kru ksc kse ksh ksk kso ksr kss ksu kuc kue kuh kuk kur kus kuu oc- occ och ock oco ocr ocs ocu oec oee oeh oeo oer oes ohc ohe ohh oho ohr ohs ohu okc oke okk oko okr oks oku oo- ooc ooh ook ooo oor oos or- orc ore orh ork oro orr ors oru os- osc ose osh osk oso osr oss osu ou- ouc oue ouh ouk ouo our ous rcc rce rch rco rcr rcs rcu re- rec ree reh rek reo rer res reu rh- rhc rhe rhh rho rhr rhs rhu rkc rke rkk rko rks rku roc roe roh rok roo ror ros rou rrc rrh rrk rrr rrs rru rsc rse rsh rsk rso rsr rss rsu ruc rue ruh ruk ruo rur rus ruu scc sce sch sck sco scr scs scu se- sec see seh sek seo ser ses seu sh- shc she shh shk sho shr shs shu sk- skc ske skh skk sko skr sks sku soc soe soh sok soo sor sos sou sr- src sre srh srk sro srr srs ss- ssc sse ssh ssk sso ssr sss ssu suc sue suh suk suo sur sus suu ucc uce uch uck uco ucr ucs ucu uec uee ueh uer ues uhc uhe uhh uho uhr uhs uhu ukc uke ukk ukr uku uoc uoe uok uoo uor uos ur- urc ure urk uro urr urs uru usc use ush usk uso usr uss usu uuc uue uur uus uuu