bbbb bbbs bblb bbls bibb bibi bibl bibs biis bili bill bils bilt bily bis- bisl biss bist bisy bits bitt bivi bivl bivy biys blbt blis blit blls blss blst blts blvt bly- blys bsts bstv btss bttb btvi byil byit bylt bysb bysi bysl byss byst bysy byts i-by ibis ibly ibss ibtb ibtl ibts ibyi iiii iiis iiit iisi iist iitt ilis ilit ill- illi ills illt illy ilts isbl isbt isil isis isit isls isly issi isss issy isti ists isty isyl isys itbs itby itil itis itll itsi itsy itty ivbv ivyl ivys libs liii liis liiv lilb lili lill lils lilt lily lisi liss list lisy litb liti litl lits litt lity livi livs livy liyl llbs llll lsts lstv ltbl ltib ltsi lttv lvii lviv lvsv lyit lyly lys- lysi lysl lyss lyst lytt lyv- s-ib s-ii s-iv s-vt sbbs sbsi sbst sibi sibs siby siit sil- sili sill sils silt sisi siss sist sisy sit- siti sits sitt sity sivi siyi sl-i slib slit slst slts slys ssby ssis ssit sslt sssb sssi ssss sstb sstl ssts st-v stbs stib stil stis stit stlt stsi stss stvs styl stys svil svit syis syl- syli syll syls sylt syss syst sytt sytv tbbs tbil tbit tbst tbvi tibi tibs tiit till tils tilt tily tisb tisi tiss tist titi tits titt tivi tivy tiyi tlli tsis tsiv tssi tsst tsts tsvi tsys ttbb ttss tttt ttyl ttys tvbs tvil tvis tvss tvtv tybi tyl- tyll tyss tyst tyti tytt tyty vbyv vibs viby viii vili vill vils vilt vily visi viss vist visy viti vitt vivi vivy vlli vlsi vlvt vsby vssl vt-i vtls vtvl vvsb vvvv vyis vyit vyss ybbs yili yill yilt yiss yist yiti ylli ylls ysby ysii ysyb yvyl yyyy