a-a a-b aaa aab aaj aak aam ab- aba abb abj abk abm aja ajb ajj ajk ajm aka akb akj akk akm ama amb amk amm baa bab baj bak bam bba bbb bbk bbm bja bjj bjk bjm bka bkb bkk bkm bma bmb bmj bmk bmm jaa jab jaj jak jam jba jbj jbk jbm jja jjb jjj jjk jka jkb jkk jkm jma jmb jmj jmm ka- kaa kab kaj kak kam kba kbb kbk kbm kjb kkb kkk kkm kma kmb kmj kmk kmm maa mab maj mak mam mba mbb mbj mbk mbm mjb mjj mjk mjm mka mkb mkk mkm mma mmb mmj mmk mmm