bbbb bbci bbin bblb bcbc bcbp bccc bcci bccl bcnu bcpl bcpp bcuc bcup bibb bibi bibl bicc bici biin bili bill bilu bin- binc bini binn binu bipp bipu blcu blic blin blip blni blub blup bnib bnin bnpp bpcp bubb bubi bubu bucc buci bucu buic buin buiu bulb buli bull bulu bunb buni bunn bunu bupc cbbc cbcc cbcl cbcn cbcp cbcu cblb cblc cbln cbpc cbpp ccbc ccbn cccb cccc ccci cccl cccp cccu ccic ccii ccil ccip cclc ccli ccnb ccnc ccni ccnp ccnu ccpl ccpn ccpp ccuc ccup cibc cibi cicc cici cicu ciii cili cill cilp cin- cinc cini cipp ciuc ciup clib clic clii clin clip clpb clpp club clun cnbc cnbl cnbp cnci cncp cnib cnic cpbc cpcu cpic cplc cpnb cpni cub- cubb cubi cucc cuci cucn cui- cuil cuin culb culc cull culp cunp cupl cupp icbc icbp iccb iccc icci iccl iccn iccp iccu icll iclp icnb icnc icpc icub icup iiii iiuc ilbc ilic ilin ill- illi illp ilni incb inci incl inni innu inp- inpi inpp inui inul inun inup ipcc ipil ipin ippc iucc iuiu iupp lbcc lcbc lccc lcpc lcpl libc libu liii liin lilb lili lill lilu linc linn lip- lipb lipc lipi lipl lipp lipu liun llcc lllc llll lnbp lppl luci luin luli lull lulu luni lunn lupi lupu luup n-ii n-up nbbc nbcc nbci nbic nbpp ncbc ncbi nccc ncci nccn nccp nccu ncip nclc ncln ncnc ncpc nibi nicc nici nicl nicu niip niiu nili nill nilp nilu nini ninl nipc nlcc nlic nlpc nnnn nnpi npbl npcc npic npin nppc nppl nubc nubi nubl nuci nucu nuin nuli null nunc nunn pbcc pbil pblu pcbc pccc pccl pcin pcip pcll pcpb pcpn pcpp pcun pibb pibi picc pici picu piip pil- pili pill pilu pinc pini pinn pinp pinu pipi pipp plcc plib plin plip plpp plup pnic pnin pnln pnnl pnpp pnup ppcc ppci ppib ppic ppli pppn pppp publ pubu puin puiu puli pull pulp pulu punc punu pupi pupl pupu puuc ubbi ubic ubii ubli ubpc ucbc ucci uccp ucil ucin ucpb uipi ulbc ulcc ulic ulli ulul uncc unci uncl uncp uni- unic unii unin unlp unni unpc upci upic upin uplb upnp uppc uppp uppu upup uucp uulu uuni uuuu