rnc rnd rng rni rnn rno rnr rns rnt roc rod roe rog roi rok ron roo ror ros rot rrc rrd rrg rri rrk rrn rrr rrs rrt rsc rsd rse rsg rsi rsk rsn rso rsr rss rst rtc rtd rte rtg rti rtk rtn rto rtr rts rtt scc scd sce scg sci sck scn sco scr scs sct sdc sdd sde sdg sdi sdk sdn sdo sdr sds sdt se- sec sed see seg sei sek sen seo ser ses set sgc sgd sge sgg sgi sgk sgn sgo sgr sgs sgt sic sid sie sig sii sik sin sio sir sis sit sk- skc skd ske skg ski skk sko skr sks skt snc snd sne sng sni snk snn sno snr sns snt soc sod soe sog soi sok son soo sor sos sot sr- src srd sre srg sri srk srn sro srr srs srt ss- ssc ssd sse ssg ssi ssk ssn sso ssr sss sst stc std ste stg sti stk stn sto str sts stt tcc tcd tce tcg tci tck tcn tco tcr tcs tct tdc tdd tde tdg tdi tdk tdn tdo tdr tds tdt te- tec ted tee teg tei tek ten teo ter tes tet tgc tge tgg tgi tgk tgn tgo tgr tgs tgt tic tid tie tig tii tik tin tio tir tis tit tkc tke tkg tkk tko tkr tks tkt tnc tnd tne tng tni tnk tnn tno tnr tns tnt to- toc tod toe tog toi tok ton too tor tos tot trc trd tre trg tri trk trn tro trr trs trt tsc tsd tse tsg tsi tsk tsn tso tsr tss tst ttc ttd tte ttg tti ttk ttn tto ttr tts ttt