a-a a-c aaa aac aak aam aan aao ac- aca acc ack acm acn aco aka akc akk akm akn ako ama amc amk amm amn amo an- ana anc ank anm ann ano aoa aoc aok aom aon aoo c-- caa cac cak cam can cao cca ccc cck ccm ccn cco cka ckc ckm cko cma cmc cmk cmm cmn cmo cn- cna cnc cnm cnn cno co- coa coc cok com con coo ka- kaa kac kak kam kan kao kca kcc kck kcm kcn kkc kkk kkm kkn kma kmc kmk kmm kmo kn- kna knc knk knm knn kno koa koc kok kom kon koo m-o maa mac mak mam man mao mc- mca mcc mck mcm mcn mco mka mkc mkk mkm mkn mko mma mmc mmk mmm mmn mmo mna mnc mnk mnm mnn mno moa moc mok mom mon moo naa nac nak nam nan nao nca ncc nck ncm ncn nco nka nkc nkk nkm nkn nko nma nmc nmk nmm nmn nmo nna nnc nnk nnm nnn nno no- noa noc nok nom non noo oaa oac oak oam oan oao oc- oca occ ock ocm ocn oco oka okc okk oko om- oma omc omm omn omo on- ona onc onk onn ono oo- ooa ooc ook oom oon ooo