rol ron roo ror ros rot rrc rrd rrh rrk rrl rrn rrr rrs rrt rsc rsd rse rsh rsk rsl rsn rso rsr rss rst rtc rtd rte rtk rtl rtn rto rtr rts rtt scc scd sce sch sck scl scn sco scr scs sct sdc sdd sde sdh sdk sdl sdn sdo sdr sds sdt se- sec sed see seh sek sel sen seo ser ses set sh- shc shd she shh shk shl shn sho shr shs sht sk- skc skd ske skh skk skl sko skr sks skt slc sld sle slh slk sll sln slo slr sls slt snc snd sne snk snl snn sno snr sns snt soc sod soe soh sok sol son soo sor sos sot sr- src srd sre srh srk srl srn sro srr srs srt ss- ssc ssd sse ssh ssk ssl ssn sso ssr sss sst stc std ste sth stk stl stn sto str sts stt tcc tcd tce tch tck tcl tcn tco tcr tcs tct tdc tdd tde tdh tdk tdl tdn tdo tdr tds tdt te- tec ted tee teh tek tel ten teo ter tes tet th- thc thd the thh thk thl thn tho thr ths tht tkc tke tkk tkl tko tkr tks tkt tlc tld tle tlh tlk tll tln tlo tlr tls tlt tnc tnd tne tnh tnk tnl tnn tno tnr tns tnt to- toc tod toe toh tok tol ton too tor tos tot trc trd tre trh trk trl trn tro trr trs trt tsc tsd tse tsh tsk tsl tsn tso tsr tss tst ttc ttd tte tth ttk ttl ttn tto ttr tts ttt