sbcc sbcs sbct sbds sbia sbic sbsa sbsd sbsi sbst sbtc sbus scaa scab scac scad scai scas scat scba scbi sccc sccs scct scda scdc scds sci- scia scic scid scis scit scsa scsc scsd scsi scst scsu sctc sctd scts scua scub scud scut sdau sdba sdcc sddc sdds sdib sdic sdsc sdss sdsu siaa siab siac siai sias siat siau siba sibc sibi sibs sibu sica sicc sici sics sicu sida sidd sidi sids siit sisa sisc sisd sisi siss sist sisu sit- sita sitc sitd siti sits sitt situ siui sius siut ssaa ssab ssac ssas ssat ssau ssca sscc ssci sscs ssdc ssdd ssid ssis ssit sssa sssb sssc sssi ssss ssta sstb sstc sstd ssts stab stac stad stai stas stat stau stbc stbd stbs stca stcc stcs stcu stds stia stib stic stid stis stit stsi stss sttc sttd stub stuc stud stus stut suas suat sub- suba subb subd subi subs suc- succ suci sucs suda sudd sudi suds suid suis suit sus- susa susd susi suss sust susu suta suti sutu suus taa- taas taat taba tabb tabc tabi tabs tabu taca tacc taci tacs tact tada tads taia tais tait tasa tasb tasc tasi tass tast tasu tata tatb tati tats tatt tatu taua taub tauc taus taut tbas tbbs tbca tbcb tbcc tbcd tbit tbst tbta tcad tcbs tcca tccc tccu tcdd tctc tcts tdac tddb tdis tdss tiaa tiab tias tiba tibi tibs tibu tica ticc tics tidc tidd tids tiit tiiu tisa tisb tisi tiss tist tita titc titi tits titt titu tsaa tsai tsat tsau tsbc tsbd tsca tscc tsdb tsia tsid tsis tssa tssi tsst tstc tsts tsui ttab ttbb ttss tttt tuas tuat tuba tubb tubs tubu tuca tucc tudi tudu tuis tuit tuiu tusa tusc tusd tusi tuss tust tuta tuti tuts tutt tutu uabc uaca uasa uasd uata uatu uaua ubac ubba ubbi ubic ubid ubii ubis ubit ubud ucad ucai ucas ucat ucbc ucca ucci ucdc ucdd ucsa ucsb ucsc ucsd ucst ucsu ucua ucut udaa udad udas udau udbc udca uddi udds udic udid udsd udts uica uisd uist uits us-a usaa usac usad usas usat usba usbc usbs usca uscc uscs usda usdc usds usdt usia usis ussa ussb ussc usss usst ussu usta ustb ustc usti usts usua usui usus utac utai utas utau utia utid utis utsa utsc utti uttu uusi uuta uuuu