rks rkt rlc rld rle rlh rli rll rlo rlr rls rlt roc rod roe roh roi rok rol roo ror ros rot rrc rrd rrh rri rrk rrl rrr rrs rrt rsc rsd rse rsh rsi rsk rsl rso rsr rss rst rtc rtd rte rti rtk rtl rto rtr rts rtt scc scd sce sch sci sck scl sco scr scs sct sdc sdd sde sdh sdi sdk sdl sdo sdr sds sdt se- sec sed see seh sei sek sel seo ser ses set sh- shc shd she shh shi shk shl sho shr shs sht sic sid sie sih sii sik sil sio sir sis sit sk- skc skd ske skh ski skk skl sko skr sks skt slc sld sle slh sli slk sll slo slr sls slt soc sod soe soh soi sok sol soo sor sos sot sr- src srd sre srh sri srk srl sro srr srs srt ss- ssc ssd sse ssh ssi ssk ssl sso ssr sss sst stc std ste sth sti stk stl sto str sts stt tcc tcd tce tch tci tck tcl tco tcr tcs tct tdc tdd tde tdh tdi tdk tdl tdo tdr tds tdt te- tec ted tee teh tei tek tel teo ter tes tet th- thc thd the thh thi thk thl tho thr ths tht tic tid tie tih tii tik til tio tir tis tit tkc tke tkk tkl tko tkr tks tkt tlc tld tle tlh tli tlk tll tlo tlr tls tlt to- toc tod toe toh toi tok tol too tor tos tot trc trd tre trh tri trk trl tro trr trs trt tsc tsd tse tsh tsi tsk tsl tso tsr tss tst ttc ttd tte tth tti ttk ttl tto ttr tts ttt