-er c-- ccc cce ccf cch cco ccr ccs ce- cec cee cef ceh ceo cer ces cfc cfe cff cfh cfo cfr cfs ch- chc che chf chh cho chr chs co- coc coe cof coh coo cor cos crc cre crf crh cro crr crs csc cse csf csh cso csr css ec- ecc ece ecf ech eco ecr ecs eec eee eef eeo eer ees ef- efc efe eff efh efo efr efs ehc ehe ehf ehh eho ehr ehs eo- eoc eoe eof eoh eoo eor eos erc ere erf erh ero err ers es- esc ese esf esh eso esr ess fcc fce fcf fco fcr fcs fec fee fef feh feo fer fes ffc ffe fff ffh ffo ffr ffs fhc fhe fhf fhh fho fhr fhs foc foe fof foh foo for fos frc fre frf frh fro frr frs fsc fse fsf fsh fso fsr fss hcc hce hcf hch hco hcr hcs he- hec hee hef heh heo her hes hfc hfe hff hfh hfo hfr hfs hhc hhe hhf hhh hho hhr hhs hoc hoe hof hoh hoo hor hos hr- hrc hre hrf hrh hro hrr hrs hsc hse hsf hsh hsr hss oc- occ ocf och oco ocr ocs oec oee oef oeh oeo oer oes of- ofc ofe off ofo ofr ofs ohc ohe ohf ohh oho ohr ohs oo- ooc oof ooh ooo oor oos or- orc ore orf orh oro orr ors os- osc ose osf osh oso osr oss rcc rce rcf rch rco rcr rcs re- rec ree ref reh reo rer res rfc rfe rff rfh rfo rfr rfs rh- rhc rhe rhf rhh rho rhr rhs roc roe rof roh roo ror ros rrc rrf rrh rrr rrs rsc rse rsf rsh rso rsr rss scc sce scf sch sco scr scs se- sec see sef seh seo ser ses sfc sfe sff sfh sfo sfr sfs sh- shc she shf shh sho shr shs soc soe sof soh soo sor sos sr- src sre srf srh sro srr srs ss- ssc sse ssf ssh sso ssr sss