rag rai ral ran rap rar ras rat rca rcc rce rcg rci rcl rcn rcp rcr rcs rct re- rea rec ree reg rei rel ren rep rer res ret rga rgc rge rgg rgi rgn rgp rgr rgs rgt ria ric rie rig rii ril rin rip rir ris rit rla rlc rle rlg rli rll rln rlp rlr rls rlt rna rnc rng rni rnn rnp rnr rns rnt rpa rpc rpe rpg rpi rpl rpn rpp rpr rps rpt rra rrc rrg rri rrl rrn rrp rrr rrs rrt rsa rsc rse rsg rsi rsl rsn rsp rsr rss rst rta rtc rte rtg rti rtl rtn rtp rtr rts rtt saa sac sae sag sai sal san sap sar sas sat sca scc sce scg sci scl scn scp scr scs sct se- sea sec see seg sei sel sen sep ser ses set sga sgc sge sgg sgi sgl sgn sgp sgr sgs sgt sia sic sie sig sii sil sin sip sir sis sit sla slc sle slg sli sll sln slp slr sls slt sna snc sne sng sni snl snn snp snr sns snt spa spc spe spg spi spl spn spp spr sps spt sr- sra src sre srg sri srl srn srp srr srs srt ss- ssa ssc sse ssg ssi ssl ssn ssp ssr sss sst sta stc ste stg sti stl stn stp str sts stt taa tac tae tag tai tal tan tap tar tas tat tca tcc tce tcg tci tcl tcn tcp tcr tcs tct te- tea tec tee teg tei tel ten tep ter tes tet tga tgc tge tgg tgi tgl tgn tgp tgr tgs tgt tia tic tie tig tii til tin tip tir tis tit tla tlc tle tlg tli tll tln tlp tlr tls tlt tna tnc tne tng tni tnl tnn tnp tnr tns tnt tpa tpc tpe tpg tpi tpl tpn tpp tpr tps tpt tra trc tre trg tri trl trn trp trr trs trt tsa tsc tse tsg tsi tsl tsn tsp tsr tss tst tta ttc tte ttg tti ttl ttn ttp ttr tts ttt