-er c-- ccc ccd cce cch cck cco ccr ccs ccu cdc cdd cde cdh cdk cdo cdr cds cdu ce- cec ced cee ceh cek ceo cer ces ceu ch- chc chd che chh chk cho chr chs chu ckc ckd ckh cko cks co- coc cod coe coh cok coo cor cos cou crc crd cre crh crk cro crr crs cru csc csd cse csh csk cso csr css csu cuc cud cue cuh cuk cuo cur cus cuu dcc dcd dce dck dco dcr dcs dcu ddc ddd dde ddh ddk ddo ddr dds ddu de- dec ded dee deh dek deo der des deu dh- dhc dhd dhe dhh dhk dho dhr dhs dhu dkc dke dkk dko dkr dks dku doc dod doe doh dok doo dor dos dou drc drd dre drk dro drr drs dru dsc dsd dse dsh dsk dso dsr dss dsu duc dud due duh duk duo dur dus ec- ecc ecd ece ech eck eco ecr ecs ecu ed- edc edd ede edh edk edo edr eds edu eec eed eee eek eeo eer ees ehc ehd ehe ehh eho ehr ehs ehu ekc ekd eke ekh eko ekr eks eku eo- eoc eod eoe eoh eok eoo eor eos eou erc erd ere erh erk ero err ers eru es- esc esd ese esh esk eso esr ess esu eu- euc eud eue eur eus hcc hcd hce hch hck hco hcr hcs hdc hdd hde hdh hdk hdo hdr hds hdu he- hec hed hee heh hek heo her hes heu hhc hhd hhe hhh hhk hho hhr hhs hhu hkd hkh hkk hko hkr hks hku hoc hod hoe hoh hok hoo hor hos hou hr- hrc hrd hre hrh hrk hro hrr hrs hru hsc hsd hse hsh hsk hsr hss hsu huc hud hue huh huk huo hur hus huu kcc kcd kce kch kck kcr kcs kcu kdc kde kdh kdk kdo kdr kds kdu ke- kec ked kee keh kek keo ker kes khe khh khk kho khr khs khu kkc kke kkh kkk kkr kks kku koc kod koe koh kok koo kor kos kou krc krd krk kro krr krs kru ksc ksd kse ksh ksk kso ksr kss ksu kuc kud kue kuh kuk kur kus kuu oc- occ ocd och ock oco ocr ocs ocu odc odd ode odh odo odr ods odu oec oed oee oeh oeo oer oes ohc ohd ohe ohh oho ohr ohs ohu okc okd oke okk oko okr oks oku oo- ooc ood ooh ook ooo oor oos or- orc ord ore orh ork oro orr ors oru os- osc osd ose osh osk oso osr oss osu ou- ouc oud oue ouh ouk ouo our ous rcc rcd rce rch rco rcr rcs rcu rdc rdd rde rdh rdo rdr rds rdu re- rec red ree reh rek reo rer res reu rh- rhc rhd rhe rhh rho rhr rhs rhu rkc rke rkk rko rks rku roc rod roe roh rok roo ror ros rou rrc rrd rrh rrk rrr rrs rru rsc rsd rse rsh rsk rso rsr rss rsu ruc rud rue ruh ruk ruo rur rus ruu scc scd sce sch sck sco scr scs scu sdc sdd sde sdh sdk sdo sdr sds sdu se- sec sed see seh sek seo ser ses seu sh- shc shd she shh shk sho shr shs shu sk- skc skd ske skh skk sko skr sks sku soc sod soe soh sok soo sor sos sou sr- src srd sre srh srk sro srr srs ss- ssc ssd sse ssh ssk sso ssr sss ssu suc sud sue suh suk suo sur sus suu ucc ucd uce uch uck uco ucr ucs ucu udc udd ude udk udo udr uds udu uec ued uee ueh uer ues uhc uhd uhe uhh uho uhr uhs uhu ukc uke ukk ukr uku uoc uod uoe uok uoo uor uos ur- urc urd ure urk uro urr urs uru usc usd use ush usk uso usr uss usu uuc uue uur uus uuu