-er c-- ccc cce cch cck cco ccr ccs ccu ccz ce- cec cee ceh cek ceo cer ces ceu cez ch- chc che chh chk cho chr chs chu chz ckc ckh cko cks co- coc coe coh cok coo cor cos cou coz crc cre crh crk cro crr crs cru crz csc cse csh csk cso csr css csu csz cuc cue cuh cuk cuo cur cus cuu cuz cz- czc cze czk czo 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 erz es- esc ese esh esk eso esr ess esu eu- euc eue eur eus eze ezh ezo ezr ezs ezz hcc hce hch hck hco hcr hcs he- hec hee heh hek heo her hes heu hez hhc hhe hhh hhk hho hhr hhs hhu hhz hkh hkk hko hkr hks hku hoc hoe hoh hok hoo hor hos hou hr- hrc hre hrh hrk hro hrr hrs hru hrz hsc hse hsh hsk hsr hss hsu hsz huc hue huh huk huo hur hus huu huz hze hzo hzs k-z kcc kce kch kck kcr kcs kcu ke- kec kee keh kek keo ker kes kez khe khh khk kho khr khs khu khz kkc kke kkh kkk kkr kks kku koc koe koh kok koo kor kos kou koz krc krk kro krr krs kru ksc kse ksh ksk kso ksr kss ksu kuc kue kuh kuk kur kus kuu kzo oc- occ och ock oco ocr ocs ocu ocz 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 orz os- osc ose osh osk oso osr oss osu ou- ouc oue ouh ouk ouo our ous oze ozo ozs ozu ozz rcc rce rch rco rcr rcs rcu re- rec ree reh rek reo rer res reu rez rh- rhc rhe rhh rho rhr rhs rhu rkc rke rkk rko rks rku rkz roc roe roh rok roo ror ros rou roz rrc rrh rrk rrr rrs rru rsc rse rsh rsk rso rsr rss rsu ruc rue ruh ruk ruo rur rus ruu ruz rze rzo scc sce sch sck sco scr scs scu se- sec see seh sek seo ser ses seu sez 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 soz sr- src sre srh srk sro srr srs ss- ssc sse ssh ssk sso ssr sss ssu ssz suc sue suh suk suo sur sus suu suz sze szr szu 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 ukz uoc uoe uok uoo uor uos ur- urc ure urk uro urr urs uru urz usc use ush usk uso usr uss usu usz uuc uue uur uus uuu uzh uzo uzu zce zco zcs zec zee zeh zek zeo zer zes zez zhc zhe zho zhr zhs zhu zks zo- zoc zoe zok zoo zor zos zou zrh zro zrs zse zsh zsu zsz zuc zuk zur zus zuz zzr zzs zzz