cccc ccci cccp ccic ccii ccip ccir ccpp ccpr ccrc ccri ccrp cicc cici cicr ciii cipp circ ciri cirr cpic cpri crcc crcr cric crip crpc cry- cyc- cycc cypc cyy- cyyc iccc icci iccp iccr icpc icrc icrr icry iiii iirc ipcc ippc ippr ippy ipri ircc iri- iric irip iriy irpc irrc irri pccc pcip pcpp pcrc picc pici picr picy piip pipi pipp pipy pirc piri pirr piry ppcc ppci ppic pppp pprc prcc prcp pri- prii prri pyic pypy pyr- pyri pyry rccc rcic rcpi rcyc ricc ripi ripp ripr riri rpii rpyc rrrr ryip yccc yirr ypcc ypir yyyy