rco rcr rcs rct rdc rdd rde rdi rdl rdm rdn rdo rdr rds rdt re- rec red ree rei rel rem ren reo rer res ret ric rid rie rii ril rim rin rio rir ris rit rlc rld rle rli rll rlm rln rlo rlr rls rlt rmc rmd rme rmi rml rmm rmn rmo rmr rms rmt rnc rnd rni rnm rnn rno rnr rns rnt roc rod roe roi rol rom ron roo ror ros rot rrc rrd rri rrl rrm rrn rrr rrs rrt rsc rsd rse rsi rsl rsm rsn rso rsr rss rst rtc rtd rte rti rtl rtm rtn rto rtr rts rtt scc scd sce sci scl scm scn sco scr scs sct sdc sdd sde sdi sdl sdm sdn sdo sdr sds sdt se- sec sed see sei sel sem sen seo ser ses set sic sid sie sii sil sim sin sio sir sis sit slc sld sle sli sll slm sln slo slr sls slt smc smd sme smi sml smm smn smo smr sms smt snc snd sne sni snl snm snn sno snr sns snt soc sod soe soi sol som son soo sor sos sot sr- src srd sre sri srl srm srn sro srr srs srt ss- ssc ssd sse ssi ssl ssm ssn sso ssr sss sst stc std ste sti stl stm stn sto str sts stt tcc tcd tce tci tcl tcm tcn tco tcr tcs tct tdc tdd tde tdi tdl tdm tdn tdo tdr tds tdt te- tec ted tee tei tel tem ten teo ter tes tet tic tid tie tii til tim tin tio tir tis tit tlc tld tle tli tll tlm tln tlo tlr tls tlt tmc tmd tme tmi tml tmm tmn tmo tmr tms tmt tnc tnd tne tni tnl tnm tnn tno tnr tns tnt to- toc tod toe toi tol tom ton too tor tos tot trc trd tre tri trl trm trn tro trr trs trt tsc tsd tse tsi tsl tsm tsn tso tsr tss tst ttc ttd tte tti ttl ttm ttn tto ttr tts ttt