bbbb bblb bffl bftt bibb bibi bibl biff bifi bili bill bilt bilu bily bitt bitu bitx bixi blbt blit blix blub bluf blut bly- bttb bubb bubi bubu buff buif buit buiu buix bulb buli bull bult bulu but- buti butt buty buxy buyi buyl buyu byil byit bylt byul ffff ffii fftf fiff fifi fift fiii fiil fili fill fiti fitt fixt fixx fixy flii flit flix flub fluf flux fluy flyi flyt ft-l ftfy ftii ftlb ftub fubb fubu fuff fufu fuil fuit fuli full fulu futi futu fuxi fuxl fuyl fuyt fuyu fyfi fyli fyti i-by ibfi ibly ibtb ibtl ibuy ibyi ifbb ifby iffy ifil ifit iiii iiit iitt ilbx ilit ill- illi illt illy ilut iluy ilxx itby itif itil itll ittf itty iuiu iuty ixil ixlu ixxi libu libx liff lifl lift lifx liii lilb lili lill lilt lilu lily litb liti litl litt litu lity liuf liut lixi lixt lixu lixy liyl liyu llll ltbf ltbl ltib luby luff luft lufu luif luit luli lull lulu luti luxi luyi luyt lxii lxxi lxxx lyff lyft lyfy lyif lyit lyly lytt lytx lyx- lyyf tbil tbit tbyf tibi tibu tiff tift tiit tiiu till tilt tily titi titt titu tixt tiyi tlli tltx ttbb ttff tttt ttul ttyl tubb tubu tuff tufi tuft tufu tuil tuit tuiu tuix tuli tull tulu tuly tuti tutl tutt tutu tuty tuxl tuyl tuyx txii tybi tyff tyft tyl- tyll tyti tytt tyty tyxt ubbi ubii ubit ubli ubly ubtf ubyx ulft ulli ully ulti ultt ulul utby util utti uttu uulu uutf uuuu uxul x-fi xibu xify xiii xil- xili xill xixi xiyu xlib xlii xlix xtul xuxu xxii xxix xxxi xxxx xxxy xyl- yiff yift yili yill yilt yiti ylli yubu yuff yuft yufu yuit yuli yulu yutu yuty yuxi yuxu yuyu yyff yyyy