c-cd cccc ccci cccp ccdc ccdi ccdp ccdr ccgc ccic ccid ccii ccip ccir ccpp ccpr ccrc ccrg ccri ccrp cd-r cddr cdic cdii cgcc cgcg cicc cici cicr cidc cidg cidi cidp cidr cigi ciid ciii cipp circ ciri cirr cpic cppd cpri crcc crcr crdc cric crig crip crpc dccc dcci dccp dcii dcpg dddd ddrc dici didi digg digi diii dipc dipp dird dirr dpci dpcp dppc dprg dric drip gc-c gccc gcic gcii gcpc gcrg gdci gdrc gggg gicr gidc gidd gidi gigg gigi gipi gipp gird girg giri girr gpgp gpip gprd gprp grcc grdc gric grid grig grip grpc grrr iccc icci iccp iccr icdc icdd icdp icgc icpc icpd icrc icrr idcr idic idid idig idir idrc igcc igcp igri iicd iiii iirc ipcc ipdc ipdi ipid ippc ippr ipri ircc ircd ircg irdc irdp iri- iric irid irig irip irpc irrc irri pccc pcgg pcip pcpp pcrc pcrd pdci pdcp pdic pdpr pdrc pgcc pgrc picc pici picr pigc pigg pigp piip pipi pipp pirc pirg piri pirr ppcc ppcd ppci ppgi ppic ppid ppig pppd pppp pprc prcc prcd prcp pri- prid prig prii prpd prrd prri rccc rcdc rcgc rcic rcid rcpd rcpi rcrd rcrg rdpc ricc ridc ridd ridi rigg rigi ripd ripi ripp ripr riri rpdp rpii rrrr