a-a a-c aaa aac aae aah aap ac- aca acc ace ach acp aea aec aee aeh aep aha ahc ahe ahh ahp ap- apa apc ape aph app c-- caa cac cae cah cap cca ccc cce cch ccp ce- cea cec cee ceh cep ch- cha chc che chh chp cpa cpc cpe cph cpp eaa eac eae eah eap ec- eca ecc ece ech eea eec eee eep eha ehc ehe ehh ehp ep- epa epc epe eph epp haa hac hae hah hap hca hcc hce hch hcp he- hea hec hee heh hep hha hhc hhe hhh hhp hpa hpc hpe hph hpp p-p paa pac pae pah pap pca pcc pce pch pcp pea pec pee peh pep pha phc phe php ppa ppc ppe pph ppp