rkc rke rkk rko rks rkt rnc rnd rnh rni rnn rno rnr rns rnt roc rod roe roh roi rok ron roo ror ros rot rrc rrd rrh rri rrk rrn rrr rrs rrt rsc rsd rse rsh rsi rsk rsn rso rsr rss rst rtc rtd rte rti rtk rtn rto rtr rts rtt scc scd sce sch sci sck scn sco scr scs sct sdc sdd sde sdh sdi sdk sdn sdo sdr sds sdt se- sec sed see seh sei sek sen seo ser ses set sh- shc shd she shh shi shk shn sho shr shs sht sic sid sie sih sii sik sin sio sir sis sit sk- skc skd ske skh ski skk sko skr sks skt snc snd sne sni snk snn sno snr sns snt soc sod soe soh soi sok son soo sor sos sot sr- src srd sre srh sri srk srn sro srr srs srt ss- ssc ssd sse ssh ssi ssk ssn sso ssr sss sst stc std ste sth sti stk stn sto str sts stt tcc tcd tce tch tci tck tcn tco tcr tcs tct tdc tdd tde tdh tdi tdk tdn tdo tdr tds tdt te- tec ted tee teh tei tek ten teo ter tes tet th- thc thd the thh thi thk thn tho thr ths tht tic tid tie tih tii tik tin tio tir tis tit tkc tke tkk tko tkr tks tkt tnc tnd tne tnh tni tnk tnn tno tnr tns tnt to- toc tod toe toh toi tok ton too tor tos tot trc trd tre trh tri trk trn tro trr trs trt tsc tsd tse tsh tsi tsk tsn tso tsr tss tst ttc ttd tte tth tti ttk ttn tto ttr tts ttt