pts ptt ra- raa rac rad rae rai ral ran rap rar ras rat rca rcc rcd rce rci rcl rcn rcp rcr rcs rct rda rdc rdd rde rdi rdl rdn rdp rdr rds rdt re- rea rec red ree rei rel ren rep rer res ret ria ric rid rie rii ril rin rip rir ris rit rla rlc rld rle rli rll rln rlp rlr rls rlt rna rnc rnd rni rnn rnp rnr rns rnt rpa rpc rpd rpe rpi rpl rpn rpp rpr rps rpt rra rrc rrd rri rrl rrn rrp rrr rrs rrt rsa rsc rsd rse rsi rsl rsn rsp rsr rss rst rta rtc rtd rte rti rtl rtn rtp rtr rts rtt saa sac sad sae sai sal san sap sar sas sat sca scc scd sce sci scl scn scp scr scs sct sda sdc sdd sde sdi sdl sdn sdp sdr sds sdt se- sea sec sed see sei sel sen sep ser ses set sia sic sid sie sii sil sin sip sir sis sit sla slc sld sle sli sll sln slp slr sls slt sna snc snd sne sni snl snn snp snr sns snt spa spc spd spe spi spl spn spp spr sps spt sr- sra src srd sre sri srl srn srp srr srs srt ss- ssa ssc ssd sse ssi ssl ssn ssp ssr sss sst sta stc std ste sti stl stn stp str sts stt taa tac tad tae tai tal tan tap tar tas tat tca tcc tcd tce tci tcl tcn tcp tcr tcs tct tda tdc tdd tde tdi tdl tdn tdp tdr tds tdt te- tea tec ted tee tei tel ten tep ter tes tet tia tic tid tie tii til tin tip tir tis tit tla tlc tld tle tli tll tln tlp tlr tls tlt tna tnc tnd tne tni tnl tnn tnp tnr tns tnt tpa tpc tpd tpe tpi tpl tpn tpp tpr tps tpt tra trc trd tre tri trl trn trp trr trs trt tsa tsc tsd tse tsi tsl tsn tsp tsr tss tst tta ttc ttd tte tti ttl ttn ttp ttr tts ttt