sat sau sca scc scd sce sci scl sco scr scs sct scu sda sdc sdd sde sdi sdl sdo sdr sds sdt sdu se- sea sec sed see sei sel seo ser ses set seu sia sic sid sie sii sil sio sir sis sit siu sla slc sld sle sli sll slo slr sls slt slu soa soc sod soe soi sol soo sor sos sot sou sr- sra src srd sre sri srl sro srr srs srt ss- ssa ssc ssd sse ssi ssl sso ssr sss sst ssu sta stc std ste sti stl sto str sts stt stu sua suc sud sue sui sul suo sur sus sut suu taa tac tad tae tai tal tao tar tas tat tau tca tcc tcd tce tci tcl tco tcr tcs tct tcu tda tdc tdd tde tdi tdl tdo tdr tds tdt tdu te- tea tec ted tee tei tel teo ter tes tet teu tia tic tid tie tii til tio tir tis tit tiu tla tlc tld tle tli tll tlo tlr tls tlt tlu to- toa toc tod toe toi tol too tor tos tot tou tra trc trd tre tri trl tro trr trs trt tru tsa tsc tsd tse tsi tsl tso tsr tss tst tsu tta ttc ttd tte tti ttl tto ttr tts ttt ttu tua tuc tud tue tui tul tuo tur tus tut tuu ua- uaa uac uad uae uai ual uao uar uas uat uau uca ucc ucd uce uci ucl uco ucr ucs uct ucu uda udc udd ude udi udl udo udr uds udt udu uea uec ued uee uei uel uer ues uet uia uic uid uie uii uil uio uir uis uit uiu ula ulc uld ule uli ull ulo ulr uls ult ulu uoa uoc uod uoe uol uoo uor uos uot ur- ura urc urd ure uri url uro urr urs urt uru usa usc usd use usi usl uso usr uss ust usu uta utc utd ute uti utl uto utr uts utt utu uua uuc uue uur uus uut uuu