-er -th c-- ccc cce ccf cch cco ccr cct ce- cec cee cef ceh ceo cer cet cfc cfe cff cfh cfo cfr cft ch- chc che chf chh cho chr cht co- coc coe cof coh coo cor cot crc cre crf crh cro crr crt ctc cte ctf cth cto ctr ctt ec- ecc ece ecf ech eco ecr ect eec eee eef eeo eer eet ef- efc efe eff efh efo efr eft ehc ehe ehf ehh eho ehr eht eo- eoc eoe eof eoh eoo eor eot erc ere erf erh ero err ert etc ete etf eth eto etr ett fcc fce fcf fco fcr fct fec fee fef feh feo fer fet ffc ffe fff ffh ffo ffr fft fhc fhe fhf fhh fho fhr foc foe fof foh foo for fot frc fre frf frh fro frr frt ftc fte ftf fth fto ftr ftt hcc hce hcf hch hco hcr hct he- hec hee hef heh heo her het hfc hfe hff hfh hfo hfr hft hhc hhe hhf hhh hho hhr hht hoc hoe hof hoh hoo hor hot hr- hrc hre hrf hrh hro hrr hrt htc hte htf hth hto htr htt oc- occ ocf och oco ocr oct oec oee oef oeh oeo oer oet of- ofc ofe off ofo ofr oft ohc ohe ohf ohh oho ohr oht oo- ooc oof ooh ooo oor oot or- orc ore orf orh oro orr ort ot- otc ote otf oth oto otr ott rcc rce rcf rch rco rcr rct re- rec ree ref reh reo rer ret rfc rfe rff rfh rfo rfr rft rh- rhc rhe rhf rhh rho rhr rht roc roe rof roh roo ror rot rrc rrf rrh rrr rrt rtc rte rtf rto rtr rtt tcc tce tcf tch tco tcr tct te- tec tee tef teh teo ter tet tfc tfe tff tfh tfo tfr tft th- thc the thf thh tho thr tht to- toc toe tof toh too tor tot trc tre trf trh tro trr trt ttc tte ttf tth tto ttr ttt