-er -th c-- ccc cce cch cck cco ccr ccs cct ccu ce- cec cee ceh cek ceo cer ces cet ceu ch- chc che chh chk cho chr chs cht chu ckc ckh cko cks ckt co- coc coe coh cok coo cor cos cot cou crc cre crh crk cro crr crs crt cru csc cse csh csk cso csr css cst csu ctc cte cth ctk cto ctr cts ctt ctu cuc cue cuh cuk cuo cur cus cut cuu ec- ecc ece ech eck eco ecr ecs ect ecu eec eee eek eeo eer ees eet ehc ehe ehh eho ehr ehs eht ehu ekc eke ekh eko ekr eks ekt eku eo- eoc eoe eoh eok eoo eor eos eot eou erc ere erh erk ero err ers ert eru es- esc ese esh esk eso esr ess est esu etc ete eth etk eto etr ets ett etu eu- euc eue eur eus eut hcc hce hch hck hco hcr hcs hct he- hec hee heh hek heo her hes het heu hhc hhe hhh hhk hho hhr hhs hht hhu hkh hkk hko hkr hks hkt hku hoc hoe hoh hok hoo hor hos hot hou hr- hrc hre hrh hrk hro hrr hrs hrt hru hsc hse hsh hsk hsr hss hst hsu htc hte hth htk hto htr hts htt huc hue huh huk huo hur hus hut huu k-t kcc kce kch kck kcr kcs kct kcu ke- kec kee keh kek keo ker kes ket khe khh khk kho khr khs khu kkc kke kkh kkk kkr kks kkt kku koc koe koh kok koo kor kos kot kou krc krk kro krr krs krt kru ksc kse ksh ksk kso ksr kss kst ksu ktc kte kth ktk kto ktr kts ktt ktu kuc kue kuh kuk kur kus kut kuu oc- occ och ock oco ocr ocs oct ocu oec oee oeh oeo oer oes oet ohc ohe ohh oho ohr ohs oht ohu okc oke okk oko okr oks oku oo- ooc ooh ook ooo oor oos oot or- orc ore orh ork oro orr ors ort oru os- osc ose osh osk oso osr oss ost osu ot- otc ote oth otk oto otr ots ott otu ou- ouc oue ouh ouk ouo our ous out rcc rce rch rco rcr rcs rct rcu re- rec ree reh rek reo rer res ret reu rh- rhc rhe rhh rho rhr rhs rht rhu rkc rke rkk rko rks rkt rku roc roe roh rok roo ror ros rot rou rrc rrh rrk rrr rrs rrt rru rsc rse rsh rsk rso rsr rss rst rsu rtc rte rtk rto rtr rts rtt rtu ruc rue ruh ruk ruo rur rus rut ruu scc sce sch sck sco scr scs sct scu se- sec see seh sek seo ser ses set seu sh- shc she shh shk sho shr shs sht shu sk- skc ske skh skk sko skr sks skt sku soc soe soh sok soo sor sos sot sou sr- src sre srh srk sro srr srs srt ss- ssc sse ssh ssk sso ssr sss sst ssu stc ste sth stk sto str sts stt stu suc sue suh suk suo sur sus sut suu tcc tce tch tck tco tcr tcs tct tcu te- tec tee teh tek teo ter tes tet teu th- thc the thh thk tho thr ths tht thu tkc tke tkk tko tkr tks tkt to- toc toe toh tok too tor tos tot tou trc tre trh trk tro trr trs trt tru tsc tse tsh tsk tso tsr tss tst tsu ttc tte tth ttk tto ttr tts ttt ttu tuc tue tuh tuk tuo tur tus tut tuu ucc uce uch uck uco ucr ucs uct ucu uec uee ueh uer ues uet uhc uhe uhh uho uhr uhs uht uhu ukc uke ukk ukr uku uoc uoe uok uoo uor uos uot ur- urc ure urk uro urr urs urt uru usc use ush usk uso usr uss ust usu utc ute uth utk uto utr uts utt utu uuc uue uur uus uut uuu