a-a a-b aaa aab aae aaj aam ab- aba abb abe abj abm aea aeb aee aej aem aja ajb aje ajj ajm ama amb ame amm baa bab bae baj bam bba bbb bbe bbm be- bea beb bee bem bja bjj bjm bma bmb bme bmj bmm eaa eab eae eaj eam eba ebb ebe ebj ebm eea eeb eee eem eja em- ema emb eme emm jaa jab jae jaj jam jba jbj jbm jea jeb jee jej jem jja jjb jjj jma jmb jme jmj jmm maa mab mae maj mam mba mbb mbe mbj mbm mea meb mee mej mem mjb mje mjj mjm mma mmb mme mmj mmm