bbbb bblb bibb bibi bibl bibo bili bill bilo bilt bio- bioi biol biot bipp bito bitt blbt blio blip blit blob bloo blop blot bobb bobi bobo boi- boii boil boit boli boll bolo bolt boob bool boop boot bopp botb boti boto bott bpot bpti btbp btlp btob bttb ibot ibtb ibtl iiii iiio iiit iioi iioo iiop iitt ilio ilit ill- illi illo illp illt iloo ilot iobi ioii ioio ioit iolo iooi iooo iopl ioto ipil iplo ipop ippo ipto itil itll itoi itol itoo itto libo liii lilb lili lill lilo lilt lio- lip- lipb lipi lipl lipo lipp litb liti litl lito litt llll lloo lob- lobb lobi lobo loit loli loll lolo loob lool loop loot lopi lopp loti lotl loto lott lppl lptb ltbl ltib obbo obit oboi obol obot oiii oiti olbo olib olio olit olli ollo olot oobi oolo oooo ootb ootp opii opio opit opo- oppi oppo opti opto otit oto- otoo otpp otti otto pbil pibb pibi piip pil- pili pill pilo pilt piob piot pipi pipo pipp piti pito pitt plib plio plip plit plob ploo plop plot plpp pltt pobo poil poio poli poll polo polt pool poop poot pop- popi popo popp popt poti poto pott ppib ppli pplo pppo pppp pptt ptbl ptol ptop tbil tbit tbtp tibi tiit till tilo tilt tiop tip- tipi tipo tipp tipt titi tito titp titt tlli tobi tobo tobt toil toit tol- toli toll tolo tolt tool toot top- topi topo topp topt toti toto tott tpol tppp tptp ttbb ttop tttt