a-a a-c aaa aac aae aah aan aap ac- aca acc ace ach acn acp aea aec aee aeh aen aep aha ahc ahe ahh ahn ahp an- ana anc ane anh ann anp ap- apa apc ape aph apn app c-- caa cac cae cah can cap cca ccc cce cch ccn ccp ce- cea cec cee ceh cen cep ch- cha chc che chh chn chp cn- cna cnc cne cnh cnn cnp cpa cpc cpe cph cpn cpp eaa eac eae eah ean eap ec- eca ecc ece ech ecn eea eec eee een eep eha ehc ehe ehh ehn ehp en- ena enc ene enh enn enp ep- epa epc epe eph epn epp haa hac hae hah han hap hca hcc hce hch hcn hcp he- hea hec hee heh hen hep hha hhc hhe hhh hhn hhp hna hnc hne hnh hnn hpa hpc hpe hph hpn hpp naa nac nae nah nan nap nca ncc nce nch ncn ncp ne- nea nec nee neh nen nep nha nhc nhe nhh nhn nhp nna nnc nne nnh nnn nnp npa npc npe nph npn npp p-p paa pac pae pah pan pap pca pcc pce pch pcn pcp pea pec pee peh pen pep pha phc phe phn php pn- pna pnc pne pnh pnn pnp ppa ppc ppe pph ppn ppp