cccc cccp cccs ccpp ccps ccsp ccss ccst cctc cctt cpcs cpps cpsc cptp cpts cscc cscs cspc csps cspt cstc csts csws ctcp ctpp ctps ctsc ctss ctts cttw cwts pccc pccs pccw pcpp pcps pcts ppcc ppcs pppp ppps ppss ppts pptt pspp psps pssc psst psts ptcc pttc pwts sccc sccp sccs scct scps scpt scsc scst sctc scts spcc spcs spps spsp spss spst sptc spts sscc sscp sscs sspc ssps sspt sssc ssss sstc sstp ssts ssws stcc stcp stcs stpp stps stss sttc swcc swss swts tccc tctc tcts tpcp tpcs tppp tpsc tptp tpws tscc tscp tsps tspt tsst tstc tsts ttcp ttss tttt twps twss wccc wccp wccs wcct wccw wcpc wcpp wcps wcpt wcsc wcsp wcss wcst wcsw wctc wctp wcts wctt wctw wcwc wcwp wpcc wpcs wpct wpcw wppc wppt wpsp wpst wptc wptw wpwc wpwt wscc wscp wscs wscw wspc wsps wspt wssc wssp wsss wsst wssw wstc wstp wsts wstt wstw wsws wswt wsww wtcc wtcp wtcs wtct wtcw wtps wtpt wtsp wtss wttc wtts wttt wttw wtws wtwt wtww wwcs wwct wwcw wwpc wwpt wwpw wwsc wwsp wwss wwst wwtc wwtp wwtw wwwc wwws wwww