bbbb bbbs bcbc bcbs bccc bccs bcnu bcsc bcsn bcss bctc bcts bcuc bnss bscs bsns bssc bsts btcc btcs btss bttb btus bubb bubs bubu bucc bucs bucu bunb bunn buns bunt bunu busc buss bust busu but- buts butt buus cbbc cbbs cbcc cbcn cbcs cbct cbcu cbsc cbsn cbtc cbus ccbc ccbn cccb cccc cccs cccu ccnb ccnc ccns ccnu ccsn ccss ccst cctb cctc cctt ccuc ccus ccut cnbc cnss cntc cnut cscb cscc cscs cstc csts csus ctbs ctns ctsc ctsn ctss ctsu cttn ctts cub- cubb cubs cucc cucn cunt cusb cuss cust cusu cut- cutc cuts cutt nbbc nbcc nbcs ncbc ncbs nccc nccn nccs ncct nccu ncnc ncsc ncss ncst nctc nnnn nnss nntn nscc nscs nssb nssc nsss nstc nsts nstu nsub ntbc ntcc ntnu ntsb ntsc ntss ntsu ntuc nubc nubs nucs nucu nunc nunn nuns nunt nuss nust nusu nuts nutt nutu sbbs sbcc sbcs sbct sbst sbtc sbtn sbus sccc sccs scct scnt scsc scsn scst scsu sctc sctn scts scub scun scut sncc snns snub snus ssbn sscc sscs ssns sssb sssc ssss sstb sstc ssts stbc stbs stcc stcs stcu stnn stns stss sttc stub stuc stun stus stut sub- subb subs suc- succ sucs sun- sunb sunn suns sunt sunu sus- suss sust susu sutu suus tbbs tbcb tbcc tbst tcbs tccc tccu tcnn tctc tcts tnbc tncc tnts tnut tsbc tscc tsst tstc tsts tsun ttbb ttcn ttss tttt tubb tubs tubu tucc tunb tunc tunn tuns tunu tusc tuss tust tuts tutt tutu ucbc ucsb ucsc ucst ucsu ucut uncc uncs unct unns uns- unsc unst untb unts unus unut usbc usbs uscc uscs usnc usnu ussb ussc usss usst ussu ustb ustc usts usun usus utsc uttu uuuu