rdt re- reb rec red ree reh rei rel ren rer res ret rh- rhb rhc rhd rhe rhh rhi rhl rhn rhr rhs rht rib ric rid rie rih rii ril rin rir ris rit rlc rld rle rlh rli rll rln rlr rls rlt rnb rnc rnd rnh rni rnn rnr rns rnt rrb rrc rrd rrh rri rrl rrn rrr rrs rrt rsb rsc rsd rse rsh rsi rsl rsn rsr rss rst rtb rtc rtd rte rti rtl rtn rtr rts rtt sbb sbc sbd sbe sbh sbi sbl sbn sbr sbs sbt scb scc scd sce sch sci scl scn scr scs sct sdb sdc sdd sde sdh sdi sdl sdn sdr sds sdt se- seb sec sed see seh sei sel sen ser ses set sh- shb shc shd she shh shi shl shn shr shs sht sib sic sid sie sih sii sil sin sir sis sit slb slc sld sle slh sli sll sln slr sls slt snb snc snd sne sni snl snn snr sns snt sr- srb src srd sre srh sri srl srn srr srs srt ss- ssb ssc ssd sse ssh ssi ssl ssn ssr sss sst stb stc std ste sth sti stl stn str sts stt tbb tbc tbd tbe tbh tbi tbl tbn tbr tbs tbt tcb tcc tcd tce tch tci tcl tcn tcr tcs tct tdb tdc tdd tde tdh tdi tdl tdn tdr tds tdt te- teb tec ted tee teh tei tel ten ter tes tet th- thb thc thd the thh thi thl thn thr ths tht tib tic tid tie tih tii til tin tir tis tit tlc tld tle tlh tli tll tln tlr tls tlt tnb tnc tnd tne tnh tni tnl tnn tnr tns tnt trb trc trd tre trh tri trl trn trr trs trt tsb tsc tsd tse tsh tsi tsl tsn tsr tss tst ttb ttc ttd tte tth tti ttl ttn ttr tts ttt