cccc cccp cccs cccu ccpp ccpr ccps ccrc ccrp ccrs ccsp ccss ccuc ccup ccus cpcs cpcu cpps cprs cpsc cpsr cpsu cpus crcc crcr crcz crpc crps crsp crss crup crus cruz cscc cscr cscs cspc csps csrc csrs cssr csup csur csus cucc cupp cupr cups curr curs cusp cuss cusu pccc pccs pcpp pcps pcrc ppcc ppcs pppp ppps pprc ppru ppss ppur prcc prcp prcs prps prrs prsc prss prus pruu pscu pspp pspr psps psrp pssc pups pupu pur- purp purr purs puru puss puuc rccc rccs rcps rcsc rcss rpcs rpps rrrr rrsp rscc rscs rsps rupp rurc rurp rurs ruru russ rusu sccc sccp sccs scps scr- scrc scrs scsc scsr scsu scup scur spcc spcs spps sprs spsp spss spur spus srcc srpc srps srsp srzu sscc sscp sscs sspc ssps ssrc ssrs sssc ssss suc- succ sucr sucs sup- supp supr sups sur- surc surp surr surs suru sus- susp suss susu susz suus suzu suzz szss szuc szur u-rp uccp ucrc ucsc ucsu upcs uppc uppp uppu upsc upup urss ursu urup urur urus uruz uscc uscs uspc uspp usps ussc ussr usss ussu usus uucp uuuu zsss zurr zuru zuzu zzzs zzzz