a-a a-b a-i aaa aab aad aae aag aai aam ab- aba abb abd abe abg abi abm ad- ada adb add ade adg adi adm aea aeb aed aee aeg aei aem ag- aga agb agd age agg agi agm ai- aia aib aid aie aig aii aim ama amb amd ame amg ami amm baa bab bad bae bag bai bam bba bbb bbd bbe bbg bbi bbm bda bdb bdd bde bdg bdi bdm be- bea beb bed bee beg bei bem bga bgb bgd bge bgg bgi bgm bi- bia bib bid bie big bii bim bma bmb bmd bme bmg bmi bmm daa dab dad dae dag dai dam dba dbb dbd dbe dbg dbi dbm dda ddb ddd dde ddg ddi ddm de- dea deb ded dee deg dei dem dga dgd dge dgg dgi dgm di- dia dib did die dig dii dim dma dmb dmd dme dmg dmi dmm eaa eab ead eae eag eai eam eba ebb ebd ebe ebg ebi ebm ed- eda edb edd ede edg edi edm eea eeb eed eee eeg eem ega egb egd ege egg egi egm eia eib eid eie eig eii eim em- ema emb emd eme emg emi emm g-d gaa gab gad gae gag gai gam gba gbd gbe gbg gbi gbm gda gdb gdd gde gdi gdm ge- gea geb ged gee geg gei gem gga ggb ggd ggg ggi ggm gia gib gid gie gig gii gim gma gmb gmd gme gmg gmi gmm i-d ia- iaa iab iad iae iag iai iam iba ibb ibd ibe ibg ibi ibm ida idb idd ide idg idi idm ie- iea ied iee ieg iei iem iga igb igd ige igg igi igm iia iib iid iie iii iim im- ima imb imd ime img imi imm maa mab mad mae mag mai mam mba mbb mbd mbe mbg mbi mbm mda mdb mdd mde mdg mdi mdm mea meb med mee meg mei mem mga mgb mgd mge mgi mgm mi- mia mib mid mie mig mii mim mma mmb mmd mme mmg mmi mmm