seb sec sed see seh sel seo ser ses set seu sh- shb shc shd she shh shl sho shr shs sht shu slb slc sld sle slh sll slo slr sls slt slu sob soc sod soe soh sol soo sor sos sot sou sr- srb src srd sre srh srl sro srr srs srt ss- ssb ssc ssd sse ssh ssl sso ssr sss sst ssu stb stc std ste sth stl sto str sts stt stu sub suc sud sue suh sul suo sur sus sut suu tbb tbc tbd tbe tbh tbl tbo tbr tbs tbt tbu tcb tcc tcd tce tch tcl tco tcr tcs tct tcu tdb tdc tdd tde tdh tdl tdo tdr tds tdt tdu te- teb tec ted tee teh tel teo ter tes tet teu th- thb thc thd the thh thl tho thr ths tht thu tlc tld tle tlh tll tlo tlr tls tlt tlu to- tob toc tod toe toh tol too tor tos tot tou trb trc trd tre trh trl tro trr trs trt tru tsb tsc tsd tse tsh tsl tso tsr tss tst tsu ttb ttc ttd tte tth ttl tto ttr tts ttt ttu tub tuc tud tue tuh tul tuo tur tus tut tuu ubb ubc ube ubh ubl ubo ubr ubs ubt ubu ucb ucc ucd uce uch ucl uco ucr ucs uct ucu udb udc udd ude udl udo udr uds udt udu ueb uec ued uee ueh uel uer ues uet uhb uhc uhd uhe uhh uhl uho uhr uhs uht uhu ulb ulc uld ule ull ulo ulr uls ult ulu uob uoc uod uoe uol uoo uor uos uot ur- urb urc urd ure url uro urr urs urt uru usb usc usd use ush usl uso usr uss ust usu utb utc utd ute uth utl uto utr uts utt utu uuc uue uur uus uut uuu