shu sic sid sif sih sii sin sio sir sis sit siu snc snd snf sni snn sno snr sns snt snu soc sod sof soh soi son soo sor sos sot sou sr- src srd srf srh sri srn sro srr srs srt ss- ssc ssd ssf ssh ssi ssn sso ssr sss sst ssu stc std stf sth sti stn sto str sts stt stu suc sud suf suh sui sun suo sur sus sut suu tcc tcd tcf tch tci tcn tco tcr tcs tct tcu tdc tdd tdf tdh tdi tdn tdo tdr tds tdt tdu tfc tfd tff tfh tfi tfn tfo tfr tfs tft tfu th- thc thd thf thh thi thn tho thr ths tht thu tic tid tif tih tii tin tio tir tis tit tiu tnc tnd tnf tnh tni tnn tno tnr tns tnt to- toc tod tof toh toi ton too tor tos tot tou trc trd trf trh tri trn tro trr trs trt tru tsc tsd tsf tsh tsi tsn tso tsr tss tst tsu ttc ttd ttf tth tti ttn tto ttr tts ttt ttu tuc tud tuf tuh tui tun tuo tur tus tut tuu ucc ucd ucf uch uci ucn uco ucr ucs uct ucu udc udd udf udi udn udo udr uds udt udu ufc ufd uff ufh ufi ufn ufo ufr ufs uft ufu uhc uhd uhf uhh uhi uho uhr uhs uht uhu uic uid uif uii uin uio uir uis uit uiu un- unc und unf unh uni unn uno unr uns unt unu uoc uod uon uoo uor uos uot ur- urc urd urf uri urn uro urr urs urt uru usc usd usf ush usi usn uso usr uss ust usu utc utd utf uth uti utn uto utr uts utt utu uuc uun uur uus uut uuu