bbbb bbbs bbpr bbrc bcbc bcbp bcbs bccc bccs bcpp bcps bcrs bcsc bcss bpcp bprc brcb brrr brrs brsb brsr bry- bscp bscs bspp bspr bssc bysb bysp byss bysy cbbc cbbs cbcc cbcp cbcr cbcs cbpc cbpp cbry cbsc ccbc cccb cccc cccp cccs ccpp ccpr ccps ccrc ccrp ccrs ccsp ccss cpbc cpcs cpps cprs cpsc cpsr crbc crcc crcr crpc crps crsp crss cry- cryb crys cscb cscc cscr cscs cspb cspc csps csrc csrs cssr csys cybb cybc cyc- cycb cycc cycs cypc cyps cyrs cyy- cyyc pbcc pbrs pbsp pcbc pcbs pccc pccs pcpb pcpp pcps pcrc ppcc ppcs pppp ppps pprc ppss prbc prbs prcc prcp prcs prps prrs prsc prss prys psbr pspp pspr psps psrp pssc psy- psys pypy pyr- pyry pyss rbbb rbbr rbbs rbsp rbss rcbc rccb rccc rccs rcps rcsc rcss rcyc rpcs rpps rpyc rrrr rrsp rscc rscs rscy rspb rsps rybp rysy sbbs sbcc sbcs sbsp sccc sccp sccs sccy scpb scps scr- scrc scrs scry scsc scsr spby spcc spcs spps sprs spry spsp spss spy- spyr spys srbc srby srcc srpc srps srsp ssbr ssby sscc sscp sscs sspc ssps ssrc ssrs sssb sssc ssss sycr syrs syry syss ybbs ybry yccc ycsb ypcc ysby ysyb yyyy