-er c-- ccc ccd cce cch cco ccr ccs cdc cdd cde cdh cdo cdr cds ce- cec ced cee ceh ceo cer ces ch- chc chd che chh cho chr chs co- coc cod coe coh coo cor cos crc crd cre crh cro crr crs csc csd cse csh cso csr css dcc dcd dce dco dcr dcs ddc ddd dde ddh ddo ddr dds de- dec ded dee deh deo der des dh- dhc dhd dhe dhh dho dhr dhs doc dod doe doh doo dor dos drc drd dre dro drr drs dsc dsd dse dsh dso dsr dss ec- ecc ecd ece ech eco ecr ecs ed- edc edd ede edh edo edr eds eec eed eee eeo eer ees ehc ehd ehe ehh eho ehr ehs eo- eoc eod eoe eoh eoo eor eos erc erd ere erh ero err ers es- esc esd ese esh eso esr ess hcc hcd hce hch hco hcr hcs hdc hdd hde hdh hdo hdr hds he- hec hed hee heh heo her hes hhc hhd hhe hhh hho hhr hhs hoc hod hoe hoh hoo hor hos hr- hrc hrd hre hrh hro hrr hrs hsc hsd hse hsh hsr hss oc- occ ocd och oco ocr ocs odc odd ode odh odo odr ods oec oed oee oeh oeo oer oes ohc ohd ohe ohh oho ohr ohs oo- ooc ood ooh ooo oor oos or- orc ord ore orh oro orr ors os- osc osd ose osh oso osr oss rcc rcd rce rch rco rcr rcs rdc rdd rde rdh rdo rdr rds re- rec red ree reh reo rer res rh- rhc rhd rhe rhh rho rhr rhs roc rod roe roh roo ror ros rrc rrd rrh rrr rrs rsc rsd rse rsh rso rsr rss scc scd sce sch sco scr scs sdc sdd sde sdh sdo sdr sds se- sec sed see seh seo ser ses sh- shc shd she shh sho shr shs soc sod soe soh soo sor sos sr- src srd sre srh sro srr srs ss- ssc ssd sse ssh sso ssr sss