cccc cccm cccs cccu ccmc ccmm ccms ccrc ccrs ccss ccuc ccus cmcc cmcs cmmc cmms cmrr cmrs cmsc cmus crcc crcr crms crss crum crus cscc cscr cscs csmc csmu csrc csrs cssm cssr csum csur csus cucc cucm cum- cums curr curs cuss cusu mccc mcmc mcrc mcss mmcc mmcm mmcs mmmc mmmm mmms mmrc mmsc mmsu mmus mr-c mrcc mrcs mrmc mrrc mrsc mscc msmc msmm msms msmu mssm mssr msus muc- mucc mucu mumm mums mumu murc murr murs muru musc muss musu rccc rccs rcms rcsc rcss rmsc rrmc rrrr rrum rscc rscs rsum rumm rums rurc rurs ruru russ rusu sccc sccm sccs scmc scmm scms scr- scrc scrs scsc scsr scsu scum scur smcc smsc smss smur smus srcc srmc sscc sscs ssmc ssrc ssrm ssrs sssc sssm ssss suc- succ sucr sucs sum- sums sumu sur- surc surr surs suru sus- suss susu suum suus ucmc ucrc ucsc ucsm ucsu umms umsu umus urss ursu urum urur urus uscc uscm uscs usmc usmm usms ussc ussr usss ussu usus uuuu