sig sih sii sil sio sir sis sit siu slc sle slg slh sli sll slo slr sls slt slu soc soe sog soh soi sol soo sor sos sot sou sr- src sre srg srh sri srl sro srr srs srt ss- ssc sse ssg ssh ssi ssl sso ssr sss sst ssu stc ste stg sth sti stl sto str sts stt stu suc sue sug suh sui sul suo sur sus sut suu tcc tce tcg tch tci tcl tco tcr tcs tct tcu te- tec tee teg teh tei tel teo ter tes tet teu tgc tge tgg tgh tgi tgl tgo tgr tgs tgt tgu th- thc the thg thh thi thl tho thr ths tht thu tic tie tig tih tii til tio tir tis tit tiu tlc tle tlg tlh tli tll tlo tlr tls tlt tlu to- toc toe tog toh toi tol too tor tos tot tou trc tre trg trh tri trl tro trr trs trt tru tsc tse tsg tsh tsi tsl tso tsr tss tst tsu ttc tte ttg tth tti ttl tto ttr tts ttt ttu tuc tue tug tuh tui tul tuo tur tus tut tuu ucc uce ucg uch uci ucl uco ucr ucs uct ucu uec uee ueg ueh uei uel uer ues uet ugc uge ugg ugh ugi ugl ugo ugr ugs ugt ugu uhc uhe uhh uhi uhl uho uhr uhs uht uhu uic uie uig uii uil uio uir uis uit uiu ulc ule ulg uli ull ulo ulr uls ult ulu uoc uoe uog uol uoo uor uos uot ur- urc ure urg uri url uro urr urs urt uru usc use usg ush usi usl uso usr uss ust usu utc ute uth uti utl uto utr uts utt utu uuc uue uug uur uus uut uuu