rlc rlg rli rll rln rlo rlr rls rlt rna rnc rng rni rnn rno rnr rns rnt roa roc rog roi rok rol ron roo ror ros rot rra rrc rrg rri rrk rrl rrn rrr rrs rrt rsa rsc rsg rsi rsk rsl rsn rso rsr rss rst rta rtc rtg rti rtk rtl rtn rto rtr rts rtt saa sac sag sai sak sal san sao sar sas sat sca scc scg sci sck scl scn sco scr scs sct sga sgc sgg sgi sgk sgl sgn sgo sgr sgs sgt sia sic sig sii sik sil sin sio sir sis sit sk- ska skc skg ski skk skl sko skr sks skt sla slc slg sli slk sll sln slo slr sls slt sna snc sng sni snk snl snn sno snr sns snt soa soc sog soi sok sol son soo sor sos sot sr- sra src srg sri srk srl srn sro srr srs srt ss- ssa ssc ssg ssi ssk ssl ssn sso ssr sss sst sta stc stg sti stk stl stn sto str sts stt taa tac tag tai tak tal tan tao tar tas tat tca tcc tcg tci tck tcl tcn tco tcr tcs tct tga tgc tgg tgi tgk tgl tgn tgo tgr tgs tgt tia tic tig tii tik til tin tio tir tis tit tka tkc tkg tkk tkl tko tkr tks tkt tla tlc tlg tli tlk tll tln tlo tlr tls tlt tna tnc tng tni tnk tnl tnn tno tnr tns tnt to- toa toc tog toi tok tol ton too tor tos tot tra trc trg tri trk trl trn tro trr trs trt tsa tsc tsg tsi tsk tsl tsn tso tsr tss tst tta ttc ttg tti ttk ttl ttn tto ttr tts ttt