cccc cccp cccs ccee ccpe ccpp ccpr ccps ccrc ccre ccrp ccrs ccsp ccss cec- cece cecp cecs ceec cees cepc cepe cepp cepr ceps cer- cerc cere cerp cers cery cesc cese cesp cesr cess ceys cpce cpcs cpep cper cpps cpre cprs cpsc cpsr crcc crce crcr cre- crec cree crep cres crpc crps crsp crss cry- crys cscc csce cscr cscs csec csee csep cser cspc cspe csps csrc csrs csse cssr csys cyc- cycc cycs cypc cyps cyre cyrs cyse cyy- cyyc eccc ecce eces ecpp ecrc ecrr ecsc ecse ecsp ecss eecs eeee eees eeps eerc eers eery eese eesy epcc epec epee eper epes eppc eppp epps eppy eprp eprs epsc epsp epss ercc erce ercp erec erer eres erpe erps errc erre errs erse eryc erye esce escr escs esee eser eses espc espe espp esps espy esse essp essy eyec eyer eyes eyey eype eyre eyry eyse eyyr pccc pcce pccs pcep pcer pcpp pcps pcrc pcre pcse pece pecr pecs pecy peec peep peer pees pepe peps per- perc pere perp perr pers pery pese pess pesy peyr peys ppcc ppcs pper pppp ppps pprc ppss ppye prcc prcp prcs pre- prec pree prep pres prey prps prrs prsc prse prss prys psec pspp pspr psps psrp pssc psse psy- psys pyce pyep pyes pype pypy pyr- pyre pyry pyse pyss rccc rccs rcep rcps rcsc rcss rcyc recc rece recp recr recs recy reep rees repe repp repr reps repy rere rers rery rese resp ress reye reys rpcs rpps rpyc rrrr rrsp rscc rscs rscy rsee rsps rsre ryes rype rysy sccc scce sccp sccs sccy scec scee scep scer scey scpe scps scr- scrc scre scrs scry scsc scsr scye se-c se-e se-s se-y sec- secc sece secr secs secy seec seep seer sees seey sepe sepp sepr seps serc sere serp serr sers sery sesc sese sess seye seys spcc spcs spec spee sper spes spey spps sprs spry spse spsp spss spy- spyr spys srcc srec sres srpc srps srsp sscc ssce sscp sscs ssec ssee ssep sses sspc sspe ssps ssrc ssrs sssc ssss syce sycr syer syes sype syre syrs syry syse syss yccc ycee yeep yeer yees yepe yepp yeps yere yerr yers yery yess yeye yeyr ypcc ysee yser yses ysse yyyy