-er -th c-- ccc cce cch cck cco ccr cct ccu ce- cec cee ceh cek ceo cer cet ceu ch- chc che chh chk cho chr cht chu ckc ckh cko ckt co- coc coe coh cok coo cor cot cou crc cre crh crk cro crr crt cru ctc cte cth ctk cto ctr ctt ctu cuc cue cuh cuk cuo cur cut cuu ec- ecc ece ech eck eco ecr ect ecu eec eee eek eeo eer eet ehc ehe ehh eho ehr eht ehu ekc eke ekh eko ekr ekt eku eo- eoc eoe eoh eok eoo eor eot eou erc ere erh erk ero err ert eru etc ete eth etk eto etr ett etu eu- euc eue eur eut hcc hce hch hck hco hcr hct he- hec hee heh hek heo her het heu hhc hhe hhh hhk hho hhr hht hhu hkh hkk hko hkr hkt hku hoc hoe hoh hok hoo hor hot hou hr- hrc hre hrh hrk hro hrr hrt hru htc hte hth htk hto htr htt huc hue huh huk huo hur hut huu k-t kcc kce kch kck kcr kct kcu ke- kec kee keh kek keo ker ket khe khh khk kho khr khu kkc kke kkh kkk kkr kkt kku koc koe koh kok koo kor kot kou krc krk kro krr krt kru ktc kte kth ktk kto ktr ktt ktu kuc kue kuh kuk kur kut kuu oc- occ och ock oco ocr oct ocu oec oee oeh oeo oer oet ohc ohe ohh oho ohr oht ohu okc oke okk oko okr oku oo- ooc ooh ook ooo oor oot or- orc ore orh ork oro orr ort oru ot- otc ote oth otk oto otr ott otu ou- ouc oue ouh ouk ouo our out rcc rce rch rco rcr rct rcu re- rec ree reh rek reo rer ret reu rh- rhc rhe rhh rho rhr rht rhu rkc rke rkk rko rkt rku roc roe roh rok roo ror rot rou rrc rrh rrk rrr rrt rru rtc rte rtk rto rtr rtt rtu ruc rue ruh ruk ruo rur rut ruu tcc tce tch tck tco tcr tct tcu te- tec tee teh tek teo ter tet teu th- thc the thh thk tho thr tht thu tkc tke tkk tko tkr tkt to- toc toe toh tok too tor tot tou trc tre trh trk tro trr trt tru ttc tte tth ttk tto ttr ttt ttu tuc tue tuh tuk tuo tur tut tuu ucc uce uch uck uco ucr uct ucu uec uee ueh uer uet uhc uhe uhh uho uhr uht uhu ukc uke ukk ukr uku uoc uoe uok uoo uor uot ur- urc ure urk uro urr urt uru utc ute uth utk uto utr utt utu uuc uue uur uut uuu