roc roe rog roi rok rol ron roo ror ros rot rrc rrg rri rrk rrl rrn rrr rrs rrt rsc rse rsg rsi rsk rsl rsn rso rsr rss rst rtc rte rtg rti rtk rtl rtn rto rtr rts rtt scc sce scg sci sck scl scn sco scr scs sct se- sec see seg sei sek sel sen seo ser ses set sgc sge sgg sgi sgk sgl sgn sgo sgr sgs sgt sic sie sig sii sik sil sin sio sir sis sit sk- skc ske skg ski skk skl sko skr sks skt slc sle slg sli slk sll sln slo slr sls slt snc sne sng sni snk snl snn sno snr sns snt soc soe sog soi sok sol son soo sor sos sot sr- src sre srg sri srk srl srn sro srr srs srt ss- ssc sse ssg ssi ssk ssl ssn sso ssr sss sst stc ste stg sti stk stl stn sto str sts stt tcc tce tcg tci tck tcl tcn tco tcr tcs tct te- tec tee teg tei tek tel ten teo ter tes tet tgc tge tgg tgi tgk tgl tgn tgo tgr tgs tgt tic tie tig tii tik til tin tio tir tis tit tkc tke tkg tkk tkl tko tkr tks tkt tlc tle tlg tli tlk tll tln tlo tlr tls tlt tnc tne tng tni tnk tnl tnn tno tnr tns tnt to- toc toe tog toi tok tol ton too tor tos tot trc tre trg tri trk trl trn tro trr trs trt tsc tse tsg tsi tsk tsl tsn tso tsr tss tst ttc tte ttg tti ttk ttl ttn tto ttr tts ttt