rcr rcs rct rdc rdd rde rdf rdi rdm rdn rdo rdr rds rdt re- rec red ree ref rei rem ren reo rer res ret rfc rfd rfe rff rfi rfm rfn rfo rfr rfs rft ric rid rie rif rii rim rin rio rir ris rit rmc rmd rme rmf rmi rmm rmn rmo rmr rms rmt rnc rnd rni rnm rnn rno rnr rns rnt roc rod roe rof roi rom ron roo ror ros rot rrc rrd rrf rri rrm rrn rrr rrs rrt rsc rsd rse rsf rsi rsm rsn rso rsr rss rst rtc rtd rte rtf rti rtm rtn rto rtr rts rtt scc scd sce scf sci scm scn sco scr scs sct sdc sdd sde sdf sdi sdm sdn sdo sdr sds sdt se- sec sed see sef sei sem sen seo ser ses set sfc sfd sfe sff sfi sfm sfn sfo sfr sfs sft sic sid sie sif sii sim sin sio sir sis sit smc smd sme smf smi smm smn smo smr sms smt snc snd sne snf sni snm snn sno snr sns snt soc sod soe sof soi som son soo sor sos sot sr- src srd sre srf sri srm srn sro srr srs srt ss- ssc ssd sse ssf ssi ssm ssn sso ssr sss sst stc std ste stf sti stm stn sto str sts stt tcc tcd tce tcf tci tcm tcn tco tcr tcs tct tdc tdd tde tdf tdi tdm tdn tdo tdr tds tdt te- tec ted tee tef tei tem ten teo ter tes tet tfc tfd tfe tff tfi tfm tfn tfo tfr tfs tft tic tid tie tif tii tim tin tio tir tis tit tmc tmd tme tmf tmi tmm tmn tmo tmr tms tmt tnc tnd tne tnf tni tnm tnn tno tnr tns tnt to- toc tod toe tof toi tom ton too tor tos tot trc trd tre trf tri trm trn tro trr trs trt tsc tsd tse tsf tsi tsm tsn tso tsr tss tst ttc ttd tte ttf tti ttm ttn tto ttr tts ttt