shh shi shm shn shr shs sht shu sib sic sie sih sii sim sin sir sis sit siu smb smc sme smh smi smm smn smr sms smt smu snb snc sne sni snm snn snr sns snt snu sr- srb src sre srh sri srm srn srr srs srt ss- ssb ssc sse ssh ssi ssm ssn ssr sss sst ssu stb stc ste sth sti stm stn str sts stt stu sub suc sue suh sui sum sun sur sus sut suu tbb tbc tbe tbh tbi tbm tbn tbr tbs tbt tbu tcb tcc tce tch tci tcm tcn tcr tcs tct tcu te- teb tec tee teh tei tem ten ter tes tet teu th- thb thc the thh thi thm thn thr ths tht thu tib tic tie tih tii tim tin tir tis tit tiu tmb tmc tme tmh tmi tmm tmn tmr tms tmt tmu tnb tnc tne tnh tni tnm tnn tnr tns tnt trb trc tre trh tri trm trn trr trs trt tru tsb tsc tse tsh tsi tsm tsn tsr tss tst tsu ttb ttc tte tth tti ttm ttn ttr tts ttt ttu tub tuc tue tuh tui tum tun tur tus tut tuu ubb ubc ube ubh ubi ubn ubr ubs ubt ubu ucb ucc uce uch uci ucm ucn ucr ucs uct ucu ueb uec uee ueh uei uem uen uer ues uet uhb uhc uhe uhh uhi uhm uhr uhs uht uhu uib uic uie uii uim uin uir uis uit uiu um- umb umc ume umh umi umm umn umr ums umt umu un- unb unc une unh uni unm unn unr uns unt unu ur- urb urc ure uri urm urn urr urs urt uru usb usc use ush usi usm usn usr uss ust usu utb utc ute uth uti utm utn utr uts utt utu uuc uue uum uun uur uus uut uuu