a-a a-c aaa aac aae aak aam aan ac- aca acc ace ack acm acn aea aec aee aek aem aen aka akc ake akk akm akn ama amc ame amk amm amn an- ana anc ane ank anm ann c-- caa cac cae cak cam can cca ccc cce cck ccm ccn ce- cea cec cee cek cem cen cka ckc ckm cma cmc cme cmk cmm cmn cn- cna cnc cne cnm cnn eaa eac eae eak eam ean ec- eca ecc ece eck ecm ecn eea eec eee eek eem een eka ekc eke em- ema emc eme emk emm emn en- ena enc ene enk enm enn ka- kaa kac kae kak kam kan kca kcc kce kck kcm kcn ke- kea kec kee kek kem ken kkc kke kkk kkm kkn kma kmc kme kmk kmm kn- kna knc kne knk knm knn maa mac mae mak mam man mc- mca mcc mce mck mcm mcn mea mec mee mek mem men mka mkc mke mkk mkm mkn mma mmc mme mmk mmm mmn mna mnc mne mnk mnm mnn naa nac nae nak nam nan nca ncc nce nck ncm ncn ne- nea nec nee nek nem nen nka nkc nke nkk nkm nkn nma nmc nme nmk nmm nmn nna nnc nne nnk nnm nnn