rge rgg rgi rgk rgn rgr rgs rgt ria rib ric rie rig rii rik rin rir ris rit rkb rkc rke rkg rkk rks rkt rna rnb rnc rng rni rnn rnr rns rnt rra rrb rrc rrg rri rrk rrn rrr rrs rrt rsa rsb rsc rse rsg rsi rsk rsn rsr rss rst rta rtb rtc rte rtg rti rtk rtn rtr rts rtt saa sab sac sae sag sai sak san sar sas sat sba sbb sbc sbe sbg sbi sbk sbn sbr sbs sbt sca scb scc sce scg sci sck scn scr scs sct se- sea seb sec see seg sei sek sen ser ses set sga sgb sgc sge sgg sgi sgk sgn sgr sgs sgt sia sib sic sie sig sii sik sin sir sis sit sk- ska skb skc ske skg ski skk skr sks skt sna snb snc sne sng sni snk snn snr sns snt sr- sra srb src sre srg sri srk srn srr srs srt ss- ssa ssb ssc sse ssg ssi ssk ssn ssr sss sst sta stb stc ste stg sti stk stn str sts stt taa tab tac tae tag tai tak tan tar tas tat tba tbb tbc tbe tbg tbi tbk tbn tbr tbs tbt tca tcb tcc tce tcg tci tck tcn tcr tcs tct te- tea teb tec tee teg tei tek ten ter tes tet tga tgb tgc tge tgg tgi tgk tgn tgr tgs tgt tia tib tic tie tig tii tik tin tir tis tit tka tkb tkc tke tkg tkk tkr tks tkt tna tnb tnc tne tng tni tnk tnn tnr tns tnt tra trb trc tre trg tri trk trn trr trs trt tsa tsb tsc tse tsg tsi tsk tsn tsr tss tst tta ttb ttc tte ttg tti ttk ttn ttr tts ttt