a-a a-b aaa aab aad aae aag aam ab- aba abb abd abe abg abm ad- ada adb add ade adg adm aea aeb aed aee aeg aem ag- aga agb agd age agg agm ama amb amd ame amg amm baa bab bad bae bag bam bba bbb bbd bbe bbg bbm bda bdb bdd bde bdg bdm be- bea beb bed bee beg bem bga bgb bgd bge bgg bgm bma bmb bmd bme bmg bmm daa dab dad dae dag dam dba dbb dbd dbe dbg dbm dda ddb ddd dde ddg ddm de- dea deb ded dee deg dem dga dgd dge dgg dgm dma dmb dmd dme dmg dmm eaa eab ead eae eag eam eba ebb ebd ebe ebg ebm ed- eda edb edd ede edg edm eea eeb eed eee eeg eem ega egb egd ege egg egm em- ema emb emd eme emg emm g-d gaa gab gad gae gag gam gba gbd gbe gbg gbm gda gdb gdd gde gdm ge- gea geb ged gee geg gem gga ggb ggd ggg ggm gma gmb gmd gme gmg gmm maa mab mad mae mag mam mba mbb mbd mbe mbg mbm mda mdb mdd mde mdg mdm mea meb med mee meg mem mga mgb mgd mge mgm mma mmb mmd mme mmg mmm