a-a a-c aaa aac aah aao aap aar ac- aca acc ach aco acp acr aha ahc ahh aho ahp ahr aoa aoc aoh aoo aop aor ap- apa apc aph apo app apr ar- ara arc arh aro arp arr c-- caa cac cah cao cap car cca ccc cch cco ccp ccr ch- cha chc chh cho chp chr co- coa coc coh coo cop cor cpa cpc cph cpo cpp cpr cra crc crh cro crp crr haa hac hah hao hap har hca hcc hch hco hcp hcr hha hhc hhh hho hhp hhr hoa hoc hoh hoo hop hor hpa hpc hph hpo hpp hpr hr- hra hrc hrh hro hrp hrr oaa oac oah oao oap oar oc- oca occ och oco ocp ocr oha ohc ohh oho ohp ohr oo- ooa ooc ooh ooo oop oor op- opa opc oph opo opp opr or- ora orc orh oro orp orr p-p paa pac pah pao pap par pca pcc pch pco pcp pcr pha phc pho php phr poa poc poh poo pop por ppa ppc pph ppo ppp ppr pra prc prh pro prp prr ra- raa rac rah rao rap rar rca rcc rch rco rcp rcr rh- rha rhc rhh rho rhp rhr roa roc roh roo rop ror rpa rpc rph rpo rpp rpr rra rrc rrh rrp rrr