cccc cccf cccp cccs ccfc ccff ccpp ccps ccsf ccsp ccss cfcf cfcs cfcy cfps cpcs cpff cpps cpsc cscc cscf cscs csfc cspc csps csys cyc- cycc cycs cyfs cypc cyps cyy- cyyc fccf fccp fcps fcsc ffcc ffff ffps ffss fp-c fpcc fscc fspc fspf fssc fssf fssp pccc pccs pcfc pcpp pcps pfcs pfff pfps ppcc ppcs pppp ppps ppsf ppss psfs pspp psps pssc psy- psys pypy pyss sccc sccp sccs sccy scfc scps scsc sfcc sfcs sffc sfpc sfss spcc spcs spfc spfs sppf spps spsp spss spy- spys sscc sscp sscs ssfc ssfp sspc sspf ssps sssc sssf ssss syff syfy syss yccc ypcc yyff yyyy