bbbb bbci bbdd bblb bcbc bccc bcci bccl bcuc bdbc bddc bdii bibb bibi bibl bicc bici bidi bidu bild bili bill bilu blcu bldc blic blub blud bubb bubi bubu bucc buci bucu budb budd budi budl budu buic buid buiu bulb buld buli bull bulu c-cd cbbc cbcc cbcl cbcu cbdb cbdc cbdi cbid cblb cblc ccbc cccb cccc ccci cccl cccu ccdc ccdi ccic ccid ccii ccil cclc ccli ccuc cddb cddl cdic cdii cdli cibc cibi cicc cici cicu cidc cidi ciid ciii cili cill ciuc clcd cldc clib clic clii club clud cub- cubb cubi cucc cuci cudi cui- cuil culb culc culd cull dbcc dcbc dccb dccc dcci dccl dccu dcdb dcii dcil dcli dddd ddlc ddub dibb dici didi didu diii dili dill dlbd dlib dlii dlil dub- dubb dubc dubu dudd dudu duid duil dulc duli dull dulu duul ibid icbc icbd iccb iccc icci iccl iccu icdc icdd icdl icll icub idic idid idil idli idub iicd iiii iiuc ilbc ilcd ilic ill- illd illi ilud iucc iuiu lbcc lcbc lccc lcdd ldci libc libu lidb lidl liii lilb lili lill lilu llcc lldb lldc lllc llll llud luci ludd ludi luli lull lulu ubbi ubic ubid ubii ubli ubud ucbc ucci ucdc ucdd ucil udbc uddi udic udid ulbc ulcc ulic ulli ulul uulu uuuu