-er c-- ccc ccd cce cch cck cco ccr ccs cdc cdd cde cdh cdk cdo cdr cds ce- cec ced cee ceh cek ceo cer ces ch- chc chd che chh chk cho chr chs ckc ckd ckh cko cks co- coc cod coe coh cok coo cor cos crc crd cre crh crk cro crr crs csc csd cse csh csk cso csr css dcc dcd dce dck dco dcr dcs ddc ddd dde ddh ddk ddo ddr dds de- dec ded dee deh dek deo der des dh- dhc dhd dhe dhh dhk dho dhr dhs dkc dke dkk dko dkr dks doc dod doe doh dok doo dor dos drc drd dre drk dro drr drs dsc dsd dse dsh dsk dso dsr dss ec- ecc ecd ece ech eck eco ecr ecs ed- edc edd ede edh edk edo edr eds eec eed eee eek eeo eer ees ehc ehd ehe ehh eho ehr ehs ekc ekd eke ekh eko ekr eks eo- eoc eod eoe eoh eok eoo eor eos erc erd ere erh erk ero err ers es- esc esd ese esh esk eso esr ess hcc hcd hce hch hck hco hcr hcs hdc hdd hde hdh hdk hdo hdr hds he- hec hed hee heh hek heo her hes hhc hhd hhe hhh hhk hho hhr hhs hkd hkh hkk hko hkr hks hoc hod hoe hoh hok hoo hor hos hr- hrc hrd hre hrh hrk hro hrr hrs hsc hsd hse hsh hsk hsr hss kcc kcd kce kch kck kcr kcs kdc kde kdh kdk kdo kdr kds ke- kec ked kee keh kek keo ker kes khe khh khk kho khr khs kkc kke kkh kkk kkr kks koc kod koe koh kok koo kor kos krc krd krk kro krr krs ksc ksd kse ksh ksk kso ksr kss oc- occ ocd och ock oco ocr ocs odc odd ode odh odo odr ods oec oed oee oeh oeo oer oes ohc ohd ohe ohh oho ohr ohs okc okd oke okk oko okr oks oo- ooc ood ooh ook ooo oor oos or- orc ord ore orh ork oro orr ors os- osc osd ose osh osk oso osr oss rcc rcd rce rch rco rcr rcs rdc rdd rde rdh rdo rdr rds re- rec red ree reh rek reo rer res rh- rhc rhd rhe rhh rho rhr rhs rkc rke rkk rko rks roc rod roe roh rok roo ror ros rrc rrd rrh rrk rrr rrs rsc rsd rse rsh rsk rso rsr rss scc scd sce sch sck sco scr scs sdc sdd sde sdh sdk sdo sdr sds se- sec sed see seh sek seo ser ses sh- shc shd she shh shk sho shr shs sk- skc skd ske skh skk sko skr sks soc sod soe soh sok soo sor sos sr- src srd sre srh srk sro srr srs ss- ssc ssd sse ssh ssk sso ssr sss