sin sir sis sit siu snc snd snf sng sni snn snr sns snt snu sr- src srd srf srg srh sri srn srr srs srt ss- ssc ssd ssf ssg ssh ssi ssn ssr sss sst ssu stc std stf stg sth sti stn str sts stt stu suc sud suf sug suh sui sun sur sus sut suu tcc tcd tcf tcg tch tci tcn tcr tcs tct tcu tdc tdd tdf tdg tdh tdi tdn tdr tds tdt tdu tfc tfd tff tfg tfh tfi tfn tfr tfs tft tfu tgc tgf tgg tgh tgi tgn tgr tgs tgt tgu th- thc thd thf thg thh thi thn thr ths tht thu tic tid tif tig tih tii tin tir tis tit tiu tnc tnd tnf tng tnh tni tnn tnr tns tnt trc trd trf trg trh tri trn trr trs trt tru tsc tsd tsf tsg tsh tsi tsn tsr tss tst tsu ttc ttd ttf ttg tth tti ttn ttr tts ttt ttu tuc tud tuf tug tuh tui tun tur tus tut tuu ucc ucd ucf ucg uch uci ucn ucr ucs uct ucu udc udd udf udg udi udn udr uds udt udu ufc ufd uff ufg ufh ufi ufn ufr ufs uft ufu ugc ugf ugg ugh ugi ugn ugr ugs ugt ugu uhc uhd uhf uhh uhi uhr uhs uht uhu uic uid uif uig uii uin uir uis uit uiu un- unc und unf ung unh uni unn unr uns unt unu ur- urc urd urf urg uri urn urr urs urt uru usc usd usf usg ush usi usn usr uss ust usu utc utd utf uth uti utn utr uts utt utu uuc uug uun uur uus uut uuu