ral ran rar ras rat rca rcc rcd rce rcg rci rcl rcn rcr rcs rct rda rdc rdd rde rdg rdi rdl rdn rdr rds rdt re- rea rec red ree reg rei rel ren rer res ret rga rgc rgd rge rgg rgi rgn rgr rgs rgt ria ric rid rie rig rii ril rin rir ris rit rla rlc rld rle rlg rli rll rln rlr rls rlt rna rnc rnd rng rni rnn rnr rns rnt rra rrc rrd rrg rri rrl rrn rrr rrs rrt rsa rsc rsd rse rsg rsi rsl rsn rsr rss rst rta rtc rtd rte rtg rti rtl rtn rtr rts rtt saa sac sad sae sag sai sal san sar sas sat sca scc scd sce scg sci scl scn scr scs sct sda sdc sdd sde sdg sdi sdl sdn sdr sds sdt se- sea sec sed see seg sei sel sen ser ses set sga sgc sgd sge sgg sgi sgl sgn sgr sgs sgt sia sic sid sie sig sii sil sin sir sis sit sla slc sld sle slg sli sll sln slr sls slt sna snc snd sne sng sni snl snn snr sns snt sr- sra src srd sre srg sri srl srn srr srs srt ss- ssa ssc ssd sse ssg ssi ssl ssn ssr sss sst sta stc std ste stg sti stl stn str sts stt taa tac tad tae tag tai tal tan tar tas tat tca tcc tcd tce tcg tci tcl tcn tcr tcs tct tda tdc tdd tde tdg tdi tdl tdn tdr tds tdt te- tea tec ted tee teg tei tel ten ter tes tet tga tgc tge tgg tgi tgl tgn tgr tgs tgt tia tic tid tie tig tii til tin tir tis tit tla tlc tld tle tlg tli tll tln tlr tls tlt tna tnc tnd tne tng tni tnl tnn tnr tns tnt tra trc trd tre trg tri trl trn trr trs trt tsa tsc tsd tse tsg tsi tsl tsn tsr tss tst tta ttc ttd tte ttg tti ttl ttn ttr tts ttt