ssbn sscc ssci sscs ssin ssis ssit ssns ssoc ssot sssb sssc sssi ssss sstb sstc ssts stbc stbs stcc stcs stcu stib stic stio stis stit stnn stns stob ston stoo stos stot stou stsi stss sttc stub stuc stun stus stut sub- subb subi subj subo subs suc- succ suci sucs suin suio suis suit suji sun- sunb suni sunj sunn suno suns sunt sunu suos sus- susi suso suss sust susu suti suto sutu suus tbbs tbcb tbcc tbit tbst tcbs tccc tccu tcnn tcon tcos tctc tcts tibi tibs tibu ticc tico tics tiit tiiu tiji tijo tijs tinc tini tinn tino tins tint tinu tion tios tiou tisb tisi tiso tiss tist titc titi tito tits titt titu tjsj tnbc tncc tnts tnut tobi tobo tobs tobt tobu toci toco tois toit toji tojo tonb toni tonj tonn tono tons tonu toon toos toot tosb tosc tosi toso toss tost tosu totc toti toto tots tott toui toun tous tout tsbc tscc tsin tsis tsob tsoi tsos tsou tssi tsst tstc tsts tsui tsun ttbb ttcn tton ttss tttt tubb tubo tubs tubu tucc tuco tuin tuis tuit tuiu tunb tunc tuni tunn tuno tuns tunu tuos tusc tusi tuss tust tuti tuto tuts tutt tutu tuuo ubbi ubbo ubic ubii ubis ubit uboc ubon ubos ucbc ucci ucin ucio ucon ucos ucsb ucsc ucsj ucst ucsu ucut uint uist uits uncc unci unco uncs unct uni- unic unii unin unio unis unit unji unni unno unns unon unos uns- unsc unso unst untb unto unts unus unut uocc usbc usbs uscc usco uscs usin usis usjc usnc usno usnu usoc usoi usos ussb ussc usss usst ussu ustb ustc usti usto usts usui usun usus utin utis utsc utti utto uttu uuni uuno uuoc uusi uuuu