rkk rks rkt rla rlc rlg rli rll rln rlr rls rlt rna rnb rnc rng rni rnn rnr rns rnt rra rrb rrc rrg rri rrk rrl rrn rrr rrs rrt rsa rsb rsc rsg rsi rsk rsl rsn rsr rss rst rta rtb rtc rtg rti rtk rtl rtn rtr rts rtt saa sab sac sag sai sak sal san sar sas sat sba sbb sbc sbg sbi sbk sbl sbn sbr sbs sbt sca scb scc scg sci sck scl scn scr scs sct sga sgb sgc sgg sgi sgk sgl sgn sgr sgs sgt sia sib sic sig sii sik sil sin sir sis sit sk- ska skb skc skg ski skk skl skr sks skt sla slb slc slg sli slk sll sln slr sls slt sna snb snc sng sni snk snl snn snr sns snt sr- sra srb src srg sri srk srl srn srr srs srt ss- ssa ssb ssc ssg ssi ssk ssl ssn ssr sss sst sta stb stc stg sti stk stl stn str sts stt taa tab tac tag tai tak tal tan tar tas tat tba tbb tbc tbg tbi tbk tbl tbn tbr tbs tbt tca tcb tcc tcg tci tck tcl tcn tcr tcs tct tga tgb tgc tgg tgi tgk tgl tgn tgr tgs tgt tia tib tic tig tii tik til tin tir tis tit tka tkb tkc tkg tkk tkl tkr tks tkt tla tlc tlg tli tlk tll tln tlr tls tlt tna tnb tnc tng tni tnk tnl tnn tnr tns tnt tra trb trc trg tri trk trl trn trr trs trt tsa tsb tsc tsg tsi tsk tsl tsn tsr tss tst tta ttb ttc ttg tti ttk ttl ttn ttr tts ttt