rcf rch rcl rco rcr rcs rct rda rdc rdd rde rdf rdh rdl rdo rdr rds rdt re- rea rec red ree ref reh rel reo rer res ret rfa rfc rfd rfe rff rfh rfl rfo rfr rfs rft rh- rha rhc rhd rhe rhf rhh rhl rho rhr rhs rht rla rlc rld rle rlf rlh rll rlo rlr rls rlt roa roc rod roe rof roh rol roo ror ros rot rra rrc rrd rrf rrh rrl rrr rrs rrt rsa rsc rsd rse rsf rsh rsl rso rsr rss rst rta rtc rtd rte rtf rtl rto rtr rts rtt saa sac sad sae saf sah sal sao sar sas sat sca scc scd sce scf sch scl sco scr scs sct sda sdc sdd sde sdf sdh sdl sdo sdr sds sdt se- sea sec sed see sef seh sel seo ser ses set sfa sfc sfd sfe sff sfh sfl sfo sfr sfs sft sh- sha shc shd she shf shh shl sho shr shs sht sla slc sld sle slf slh sll slo slr sls slt soa soc sod soe sof soh sol soo sor sos sot sr- sra src srd sre srf srh srl sro srr srs srt ss- ssa ssc ssd sse ssf ssh ssl sso ssr sss sst sta stc std ste stf sth stl sto str sts stt taa tac tad tae taf tah tal tao tar tas tat tca tcc tcd tce tcf tch tcl tco tcr tcs tct tda tdc tdd tde tdf tdh tdl tdo tdr tds tdt te- tea tec ted tee tef teh tel teo ter tes tet tfa tfc tfd tfe tff tfh tfl tfo tfr tfs tft th- tha thc thd the thf thh thl tho thr ths tht tla tlc tld tle tlf tlh tll tlo tlr tls tlt to- toa toc tod toe tof toh tol too tor tos tot tra trc trd tre trf trh trl tro trr trs trt tsa tsc tsd tse tsf tsh tsl tso tsr tss tst tta ttc ttd tte ttf tth ttl tto ttr tts ttt