c-- c-j ccc ccj cco ccp ccr ccs cjc cjp cjr cjs co- coc coj coo cop cor cos cpc cpj cpo cpp cpr cps crc crj cro crp crr crs csc csj cso csp csr css jcc jco jcp jcr jcs jjc jjj jjp jjr jjs joc joj joo jop jor jos jpc jpj jpo jpp jpr jps jrc jro jrp jrr jrs jsc jsj jso jsp jsr jss oc- occ ocj oco ocp ocr ocs ojc ojo ojs oo- ooc ooo oop oor oos op- opc opj opo opp opr ops or- orc oro orp orr ors os- osc osj oso osp osr oss p-p pcc pcj pco pcp pcr pcs pjc pjo pjp pjs poc poo pop por pos ppc ppj ppo ppp ppr pps prc pro prp prr prs ps- psc psj pso psp psr pss rcc rcj rco rcp rcr rcs rjc rjp rjr roc roj roo rop ror ros rpc rpo rpp rpr rps rrc rrp rrr rrs rsc rsj rso rsp rsr rss scc scj sco scp scr scs sjc sjj sjp sjr sjs soc soj soo sop sor sos spc spo spp spr sps sr- src srj sro srp srr srs ss- ssc ssj sso ssp ssr sss