bbbb bbci bblb bcbc bccc bcci bccl bcuc bibb bibi bibl bicc bici bili bill bilu blcu blic blub bubb bubi bubu bucc buci bucu buic buiu bulb buli bull bulu cbbc cbcc cbcl cbcu cblb cblc ccbc cccb cccc ccci cccl cccu ccic ccii ccil cclc ccli ccuc cibc cibi cicc cici cicu ciii cili cill ciuc clib clic clii club cub- cubb cubi cucc cuci cui- cuil culb culc cull icbc iccb iccc icci iccl iccu icll icub iiii iiuc ilbc ilic ill- illi iucc iuiu lbcc lcbc lccc libc libu liii lilb lili lill lilu llcc lllc llll luci luli lull lulu ubbi ubic ubii ubli ucbc ucci ucil ulbc ulcc ulic ulli ulul uulu uuuu