a-a a-c aaa aac aah aap aar ac- aca acc ach acp acr aha ahc ahh ahp ahr ap- apa apc aph app apr ar- ara arc arh arp arr c-- caa cac cah cap car cca ccc cch ccp ccr ch- cha chc chh chp chr cpa cpc cph cpp cpr cra crc crh crp crr haa hac hah hap har hca hcc hch hcp hcr hha hhc hhh hhp hhr hpa hpc hph hpp hpr hr- hra hrc hrh hrp hrr p-p paa pac pah pap par pca pcc pch pcp pcr pha phc php phr ppa ppc pph ppp ppr pra prc prh prp prr ra- raa rac rah rap rar rca rcc rch rcp rcr rh- rha rhc rhh rhp rhr rpa rpc rph rpp rpr rra rrc rrh rrp rrr