c-cd cccc cccl cccs ccdc ccdn ccds cclc ccls ccnc ccns ccsd ccsl ccsn ccss ccst cctc cctl cctt cdcs cddl cdls cdnc cdss clcd cldc clsc cltc clts cndd cnsl cnss cntc cscc cscd cscl cscs csdn csld cssd cstc cstd csts ctls ctns ctsc ctsn ctss cttn ctts dccc dccl dccs dcct dcds dcls dcns dcsc dcss dctc dcts dddd ddlc ddss ddts dlcs dlst dncs dnsc dntt dscc dscn dscs dsls dssc dssn dsst dstc dstn dsts dtcc dtss lccc lccs lcdd lcds lcls lcsc lcsd lctl lcts ldls llcc llcs lldc llds lllc llll lndn lntc lnts lscs lsds lsts ltcc ltcs ltds ltns ltnt lttc nccc nccn nccs ncct ncdc ncdn ncds nclc ncln ncnc ncnd ncsc ncsl ncss ncst nctc ndcc ndcs ndls ndnt ndsl ndss ndtc nlcc nlcs nlls nlsc nnls nnnn nnsl nnss nntn nscc nscd nscl nscs nsdl nsds nsdt nsls nssc nsss nstc nstd nstl nsts ntcc ntds ntnd ntsc ntss sccc sccl sccs scct scdc scds scl- sclc scls scnd scnt scsc scsd scsl scsn scst sctc sctd sctl sctn scts sdcc sddc sdds sdlc sdls sdlt sdsc sdsl sdss slcc slcd slds slln slsc slst slts sncc snns snsd sscc sscs ssdc ssdd sslc sslt ssns sssc ssss sstc sstd sstl ssts stcc stcs stds stlc stld stln stlt stnd stnn stns stss sttc sttd tccc tcdd tcnn tctc tcts tdls tdss tncc tndd tnts tscc tsst tstc tsts ttcn ttss tttt