c-cd cccc cccl cccs cccu ccdc ccds cclc ccls ccsd ccsl ccss ccst cctc cctl cctt ccuc ccus ccut cdcs cddl cdls cdss clcd cldc clsc cltc clts clud clut cscc cscd cscl cscs csld cslu cssd cstc cstd csts csus ctls ctsc ctss ctsu ctts cucc cuds culc culd cull culs cult cusd cuss cust cusu cut- cutc cuts cutt dccc dccl dccs dcct dccu dcds dcls dcsc dcss dctc dcts dddd ddlc ddss ddts dlcs dlst dscc dscs dsls dssc dsst dstc dsts dtcc dtss ducs duct dudd duds dudu dulc dull dult dulu dust duts duul duut lccc lccs lcdd lcds lcls lcsc lcsd lctl lcts ldls llcc llcs lldc llds lllc llll llud lscs lsds lsts ltcc ltcs ltds lttc ltuc lucs ludd lull lulu luss lust luts sccc sccl sccs scct scdc scds scl- sclc scls scsc scsd scsl scst scsu sctc sctd sctl scts scud scul scut sdcc sddc sdds sdlc sdls sdlt sdsc sdsl sdss sdsu slcc slcd slcu slds slsc slst slsu slts sluc slud slut sscc sscs ssdc ssdd sslc sslt sssc ssss sstc sstd sstl ssts stcc stcs stcu stds stlc stld stlt stss sttc sttd stuc stud stul stus stut suc- succ sucs sudd suds sul- sulc suld sull sult sulu sus- susd suss sust susu sutu suus tccc tccu tcdd tctc tcts tcul tdls tdss tscc tsst tstc tsts ttss tttt ttul tucc tudu tull tulu tusc tusd tuss tust tutl tuts tutt tutu ucdc ucdd ucsc ucsd ucst ucsu ucut udds udsd udsl udts ulcc ults ultt ulul ulus uscc uscs usdc usdl usds usdt uslu ussc usss usst ussu ustc usts usul usus utsc utsl uttu uulu uuuu