sam sao sar sas sat sau sba sbb sbc sbd sbi sbm sbo sbr sbs sbt sbu sca scb scc scd sci scm sco scr scs sct scu sda sdb sdc sdd sdi sdm sdo sdr sds sdt sdu sia sib sic sid sii sim sio sir sis sit siu sma smb smc smd smi smm smo smr sms smt smu soa sob soc sod soi som soo sor sos sot sou sr- sra srb src srd sri srm sro srr srs srt ss- ssa ssb ssc ssd ssi ssm sso ssr sss sst ssu sta stb stc std sti stm sto str sts stt stu sua sub suc sud sui sum suo sur sus sut suu taa tab tac tad tai tam tao tar tas tat tau tba tbb tbc tbd tbi tbm tbo tbr tbs tbt tbu tca tcb tcc tcd tci tcm tco tcr tcs tct tcu tda tdb tdc tdd tdi tdm tdo tdr tds tdt tdu tia tib tic tid tii tim tio tir tis tit tiu tma tmb tmc tmd tmi tmm tmo tmr tms tmt tmu to- toa tob toc tod toi tom too tor tos tot tou tra trb trc trd tri trm tro trr trs trt tru tsa tsb tsc tsd tsi tsm tso tsr tss tst tsu tta ttb ttc ttd tti ttm tto ttr tts ttt ttu tua tub tuc tud tui tum tuo tur tus tut tuu ua- uaa uab uac uad uai uam uao uar uas uat uau uba ubb ubc ubi ubo ubr ubs ubt ubu uca ucb ucc ucd uci ucm uco ucr ucs uct ucu uda udb udc udd udi udm udo udr uds udt udu uia uib uic uid uii uim uio uir uis uit uiu um- uma umb umc umd umi umm umo umr ums umt umu uoa uob uoc uod uom uoo uor uos uot ur- ura urb urc urd uri urm uro urr urs urt uru usa usb usc usd usi usm uso usr uss ust usu uta utb utc utd uti utm uto utr uts utt utu uua uuc uum uur uus uut uuu