rat rba rbb rbd rbe rbg rbi rbn rbo rbr rbs rbt rda rdb rdd rde rdg rdi rdn rdo rdr rds rdt re- rea reb red ree reg rei ren reo rer res ret rga rgb rgd rge rgg rgi rgn rgo rgr rgs rgt ria rib rid rie rig rii rin rio rir ris rit rna rnb rnd rng rni rnn rno rnr rns rnt roa rob rod roe rog roi ron roo ror ros rot rra rrb rrd rrg rri rrn rrr rrs rrt rsa rsb rsd rse rsg rsi rsn rso rsr rss rst rta rtb rtd rte rtg rti rtn rto rtr rts rtt saa sab sad sae sag sai san sao sar sas sat sba sbb sbd sbe sbg sbi sbn sbo sbr sbs sbt sda sdb sdd sde sdg sdi sdn sdo sdr sds sdt se- sea seb sed see seg sei sen seo ser ses set sga sgb sgd sge sgg sgi sgn sgo sgr sgs sgt sia sib sid sie sig sii sin sio sir sis sit sna snb snd sne sng sni snn sno snr sns snt soa sob sod soe sog soi son soo sor sos sot sr- sra srb srd sre srg sri srn sro srr srs srt ss- ssa ssb ssd sse ssg ssi ssn sso ssr sss sst sta stb std ste stg sti stn sto str sts stt taa tab tad tae tag tai tan tao tar tas tat tba tbb tbd tbe tbg tbi tbn tbo tbr tbs tbt tda tdb tdd tde tdg tdi tdn tdo tdr tds tdt te- tea teb ted tee teg tei ten teo ter tes tet tga tgb tge tgg tgi tgn tgo tgr tgs tgt tia tib tid tie tig tii tin tio tir tis tit tna tnb tnd tne tng tni tnn tno tnr tns tnt to- toa tob tod toe tog toi ton too tor tos tot tra trb trd tre trg tri trn tro trr trs trt tsa tsb tsd tse tsg tsi tsn tso tsr tss tst tta ttb ttd tte ttg tti ttn tto ttr tts ttt