c-cd cccc cccp cccs cccu ccdc ccdp ccds ccpp ccps ccsd ccsp ccss ccuc ccup ccus cdcs cdps cdss cpcs cpcu cppd cpps cpsc cpsu cpus cscc cscd cscs csdp cspc cspd csps cssd csup csus cucc cuds cupp cups cusd cusp cuss cusu dccc dccp dccs dccu dcds dcps dcsc dcss dcup dddd ddps ddss dpcp dppc dpsd dpsu dscc dscp dscs dsdp dsps dssc dssp ducs dudd duds dudu pccc pccs pcpp pcps pdcp pdsd pdss ppcc ppcd ppcs ppds pppd pppp ppps ppss pscu psdc psdp psds pspp psps pssc puds pudu pups pupu pusd puss puuc sccc sccp sccs scdc scdp scds scps scsc scsd scsu scud scup sdcc sddc sdds sdps sdsc sdss sdsu spcc spcs spdc spdp sppd spps spsd spsp spss spud spus sscc sscp sscs ssdc ssdd ssdp sspc ssps sssc ssss suc- succ sucs sudd suds sup- supp sups sus- susd susp suss susu suus uccp ucdc ucdd ucsc ucsd ucsu udds udpd udsd upcs uppc uppp uppu upsc upup uscc uscs usdc usdp usds uspc uspp usps ussc usss ussu usus uucp uuuu