shb shc shd shh shi shn sho shr shs sht shu sib sic sid sih sii sin sio sir sis sit siu snb snc snd sni snn sno snr sns snt snu sob soc sod soh soi son soo sor sos sot sou sr- srb src srd srh sri srn sro srr srs srt ss- ssb ssc ssd ssh ssi ssn sso ssr sss sst ssu stb stc std sth sti stn sto str sts stt stu sub suc sud suh sui sun suo sur sus sut suu tbb tbc tbd tbh tbi tbn tbo tbr tbs tbt tbu tcb tcc tcd tch tci tcn tco tcr tcs tct tcu tdb tdc tdd tdh tdi tdn tdo tdr tds tdt tdu th- thb thc thd thh thi thn tho thr ths tht thu tib tic tid tih tii tin tio tir tis tit tiu tnb tnc tnd tnh tni tnn tno tnr tns tnt to- tob toc tod toh toi ton too tor tos tot tou trb trc trd trh tri trn tro trr trs trt tru tsb tsc tsd tsh tsi tsn tso tsr tss tst tsu ttb ttc ttd tth tti ttn tto ttr tts ttt ttu tub tuc tud tuh tui tun tuo tur tus tut tuu ubb ubc ubh ubi ubn ubo ubr ubs ubt ubu ucb ucc ucd uch uci ucn uco ucr ucs uct ucu udb udc udd udi udn udo udr uds udt udu uhb uhc uhd uhh uhi uho uhr uhs uht uhu uib uic uid uii uin uio uir uis uit uiu un- unb unc und unh uni unn uno unr uns unt unu uob uoc uod uon uoo uor uos uot ur- urb urc urd uri urn uro urr urs urt uru usb usc usd ush usi usn uso usr uss ust usu utb utc utd uth uti utn uto utr uts utt utu uuc uun uur uus uut uuu