c-- ccc cch cco ccp ccr ch- chc chh cho chp chr chy co- coc coh coo cop cor coy cpc cph cpo cpp cpr crc crh cro crp crr cry cyc cyo cyp cyr hcc hch hco hcp hcr hcy hhc hhh hho hhp hhr hhy hoc hoh hoo hop hor hoy hpc hph hpo hpp hpr hpy hr- hrc hrh hro hrp hrr hy- hyc hyh hyo hyp hyr hyy oc- occ och oco ocp ocr ohc ohh oho ohp ohr oo- ooc ooh ooo oop oor op- opc oph opo opp opr opy or- orc orh oro orp orr ory oyo p-p pcc pch pco pcp pcr phc pho php phr phy poc poh poo pop por poy ppc pph ppo ppp ppr prc prh pro prp prr pry py- pyc pyo pyr rcc rch rco rcp rcr rh- rhc rhh rho rhp rhr roc roh roo rop ror roy rpc rph rpo rpp rpr rrc rrh rrp rrr ry- ryc ryo ryr ryy ycc ych yco ycp ycy yhc yoc yoo yop yor yoy ypo yrc yro yrp yyc yyy