rbi rbl rbn rbr rbs rbt rda rdb rdd rde rdg rdi rdl rdn rdr rds rdt re- rea reb red ree reg rei rel ren rer res ret rga rgb rgd rge rgg rgi rgn rgr rgs rgt ria rib rid rie rig rii ril rin rir ris rit rla rld rle rlg rli rll rln rlr rls rlt rna rnb rnd rng rni rnn rnr rns rnt rra rrb rrd rrg rri rrl rrn rrr rrs rrt rsa rsb rsd rse rsg rsi rsl rsn rsr rss rst rta rtb rtd rte rtg rti rtl rtn rtr rts rtt saa sab sad sae sag sai sal san sar sas sat sba sbb sbd sbe sbg sbi sbl sbn sbr sbs sbt sda sdb sdd sde sdg sdi sdl sdn sdr sds sdt se- sea seb sed see seg sei sel sen ser ses set sga sgb sgd sge sgg sgi sgl sgn sgr sgs sgt sia sib sid sie sig sii sil sin sir sis sit sla slb sld sle slg sli sll sln slr sls slt sna snb snd sne sng sni snl snn snr sns snt sr- sra srb srd sre srg sri srl srn srr srs srt ss- ssa ssb ssd sse ssg ssi ssl ssn ssr sss sst sta stb std ste stg sti stl stn str sts stt taa tab tad tae tag tai tal tan tar tas tat tba tbb tbd tbe tbg tbi tbl tbn tbr tbs tbt tda tdb tdd tde tdg tdi tdl tdn tdr tds tdt te- tea teb ted tee teg tei tel ten ter tes tet tga tgb tge tgg tgi tgl tgn tgr tgs tgt tia tib tid tie tig tii til tin tir tis tit tla tld tle tlg tli tll tln tlr tls tlt tna tnb tnd tne tng tni tnl tnn tnr tns tnt tra trb trd tre trg tri trl trn trr trs trt tsa tsb tsd tse tsg tsi tsl tsn tsr tss tst tta ttb ttd tte ttg tti ttl ttn ttr tts ttt