rat rba rbb rbc rbd rbe rbh rbi rbn rbr rbs rbt rca rcb rcc rcd rce rch rci rcn rcr rcs rct rda rdb rdc rdd rde rdh rdi rdn rdr rds rdt re- rea reb rec red ree reh rei ren rer res ret rh- rha rhb rhc rhd rhe rhh rhi rhn rhr rhs rht ria rib ric rid rie rih rii rin rir ris rit rna rnb rnc rnd rnh rni rnn rnr rns rnt rra rrb rrc rrd rrh rri rrn rrr rrs rrt rsa rsb rsc rsd rse rsh rsi rsn rsr rss rst rta rtb rtc rtd rte rti rtn rtr rts rtt saa sab sac sad sae sah sai san sar sas sat sba sbb sbc sbd sbe sbh sbi sbn sbr sbs sbt sca scb scc scd sce sch sci scn scr scs sct sda sdb sdc sdd sde sdh sdi sdn sdr sds sdt se- sea seb sec sed see seh sei sen ser ses set sh- sha shb shc shd she shh shi shn shr shs sht sia sib sic sid sie sih sii sin sir sis sit sna snb snc snd sne sni snn snr sns snt sr- sra srb src srd sre srh sri srn srr srs srt ss- ssa ssb ssc ssd sse ssh ssi ssn ssr sss sst sta stb stc std ste sth sti stn str sts stt taa tab tac tad tae tah tai tan tar tas tat tba tbb tbc tbd tbe tbh tbi tbn tbr tbs tbt tca tcb tcc tcd tce tch tci tcn tcr tcs tct tda tdb tdc tdd tde tdh tdi tdn tdr tds tdt te- tea teb tec ted tee teh tei ten ter tes tet th- tha thb thc thd the thh thi thn thr ths tht tia tib tic tid tie tih tii tin tir tis tit tna tnb tnc tnd tne tnh tni tnn tnr tns tnt tra trb trc trd tre trh tri trn trr trs trt tsa tsb tsc tsd tse tsh tsi tsn tsr tss tst tta ttb ttc ttd tte tth tti ttn ttr tts ttt