rca rcc rcd rce rcf rch rco rcp rcr rcs rct rda rdc rdd rde rdf rdh rdo rdp rdr rds rdt re- rea rec red ree ref reh reo rep rer res ret rfa rfc rfd rfe rff rfh rfo rfp rfr rfs rft rh- rha rhc rhd rhe rhf rhh rho rhp rhr rhs rht roa roc rod roe rof roh roo rop ror ros rot rpa rpc rpd rpe rpf rph rpo rpp rpr rps rpt rra rrc rrd rrf rrh rrp rrr rrs rrt rsa rsc rsd rse rsf rsh rso rsp rsr rss rst rta rtc rtd rte rtf rto rtp rtr rts rtt saa sac sad sae saf sah sao sap sar sas sat sca scc scd sce scf sch sco scp scr scs sct sda sdc sdd sde sdf sdh sdo sdp sdr sds sdt se- sea sec sed see sef seh seo sep ser ses set sfa sfc sfd sfe sff sfh sfo sfp sfr sfs sft sh- sha shc shd she shf shh sho shp shr shs sht soa soc sod soe sof soh soo sop sor sos sot spa spc spd spe spf sph spo spp spr sps spt sr- sra src srd sre srf srh sro srp srr srs srt ss- ssa ssc ssd sse ssf ssh sso ssp ssr sss sst sta stc std ste stf sth sto stp str sts stt taa tac tad tae taf tah tao tap tar tas tat tca tcc tcd tce tcf tch tco tcp tcr tcs tct tda tdc tdd tde tdf tdh tdo tdp tdr tds tdt te- tea tec ted tee tef teh teo tep ter tes tet tfa tfc tfd tfe tff tfh tfo tfp tfr tfs tft th- tha thc thd the thf thh tho thp thr ths tht to- toa toc tod toe tof toh too top tor tos tot tpa tpc tpd tpe tpf tph tpo tpp tpr tps tpt tra trc trd tre trf trh tro trp trr trs trt tsa tsc tsd tse tsf tsh tso tsp tsr tss tst tta ttc ttd tte ttf tth tto ttp ttr tts ttt