-er -ic c-- ccc cce cch cci cck cco ccr ccs ccu ce- cec cee ceh cei cek ceo cer ces ceu ch- chc che chh chi chk cho chr chs chu ci- cic cie cih cii cik cio cir cis ciu ckc ckh cki cko cks co- coc coe coh coi cok coo cor cos cou crc cre crh cri crk cro crr crs cru csc cse csh csi csk cso csr css csu cuc cue cuh cui cuk cuo cur cus cuu ec- ecc ece ech eci eck eco ecr ecs ecu eec eee eek eeo eer ees ehc ehe ehh ehi eho ehr ehs ehu eic eie eii eik eio eir eis eiu ekc eke ekh eki eko ekr eks eku eo- eoc eoe eoh eoi eok eoo eor eos eou erc ere erh eri erk ero err ers eru es- esc ese esh esi esk eso esr ess esu eu- euc eue eui eur eus h-i hcc hce hch hci hck hco hcr hcs he- hec hee heh hei hek heo her hes heu hhc hhe hhh hhi hhk hho hhr hhs hhu hic hie hih hii hik hio hir his hiu hkh hki hkk hko hkr hks hku hoc hoe hoh hoi hok hoo hor hos hou hr- hrc hre hrh hri hrk hro hrr hrs hru hsc hse hsh hsi hsk hsr hss hsu huc hue huh hui huk huo hur hus huu icc ice ich ici ick ico icr ics icu ie- iec iee iei iek ier ies ihc ihe ihh ihi ihk iho ihr ihs ihu iic iie iih iii iio iir iis iiu ikc ike iki ikk iko ikr iks iku io- ioc ioe ioh ioi ioo ior ios iou ir- irc ire iri irk iro irr irs iru is- isc ise ish isi isk iso isr iss isu iu- iuc iue iui iur ius kcc kce kch kci kck kcr kcs kcu ke- kec kee keh kei kek keo ker kes khe khh khi khk kho khr khs khu kic kie kih kii kik kio kir kis kiu kkc kke kkh kki kkk kkr kks kku koc koe koh koi kok koo kor kos kou krc kri krk kro krr krs kru ksc kse ksh ksi ksk kso ksr kss ksu kuc kue kuh kui kuk kur kus kuu o-i oc- occ och oci ock oco ocr ocs ocu oec oee oeh oei oeo oer oes ohc ohe ohh ohi oho ohr ohs ohu oic oie oii oik oio oir ois oiu okc oke oki okk oko okr oks oku oo- ooc ooh ooi ook ooo oor oos or- orc ore orh ori ork oro orr ors oru os- osc ose osh osi osk oso osr oss osu ou- ouc oue ouh oui ouk ouo our ous rcc rce rch rci rco rcr rcs rcu re- rec ree reh rei rek reo rer res reu rh- rhc rhe rhh rhi rho rhr rhs rhu ric rie rih rii rik rio rir ris rkc rke rkk rko rks rku roc roe roh roi rok roo ror ros rou rrc rrh rri rrk rrr rrs rru rsc rse rsh rsi rsk rso rsr rss rsu ruc rue ruh rui ruk ruo rur rus ruu scc sce sch sci sck sco scr scs scu se- sec see seh sei sek seo ser ses seu sh- shc she shh shi shk sho shr shs shu sic sie sih sii sik sio sir sis siu sk- skc ske skh ski skk sko skr sks sku soc soe soh soi sok soo sor sos sou sr- src sre srh sri srk sro srr srs ss- ssc sse ssh ssi ssk sso ssr sss ssu suc sue suh sui suk suo sur sus suu ucc uce uch uci uck uco ucr ucs ucu uec uee ueh uei uer ues uhc uhe uhh uhi uho uhr uhs uhu uic uie uii uio uir uis uiu ukc uke uki ukk ukr uku uoc uoe uok uoo uor uos ur- urc ure uri urk uro urr urs uru usc use ush usi usk uso usr uss usu uuc uue uur uus uuu