-er c-- ccc cce ccf cch cco ccr ce- cec cee cef ceh ceo cer cfc cfe cff cfh cfo cfr ch- chc che chf chh cho chr co- coc coe cof coh coo cor crc cre crf crh cro crr ec- ecc ece ecf ech eco ecr eec eee eef eeo eer ef- efc efe eff efh efo efr ehc ehe ehf ehh eho ehr eo- eoc eoe eof eoh eoo eor erc ere erf erh ero err fcc fce fcf fco fcr fec fee fef feh feo fer ffc ffe fff ffh ffo ffr fhc fhe fhf fhh fho fhr foc foe fof foh foo for frc fre frf frh fro frr hcc hce hcf hch hco hcr he- hec hee hef heh heo her hfc hfe hff hfh hfo hfr hhc hhe hhf hhh hho hhr hoc hoe hof hoh hoo hor hr- hrc hre hrf hrh hro hrr oc- occ ocf och oco ocr oec oee oef oeh oeo oer of- ofc ofe off ofo ofr ohc ohe ohf ohh oho ohr oo- ooc oof ooh ooo oor or- orc ore orf orh oro orr rcc rce rcf rch rco rcr re- rec ree ref reh reo rer rfc rfe rff rfh rfo rfr rh- rhc rhe rhf rhh rho rhr roc roe rof roh roo ror rrc rrf rrh rrr