a-a a-b aaa aab aad aae aag aah ab- aba abb abd abe abg abh ad- ada adb add ade adg adh aea aeb aed aee aeg aeh ag- aga agb agd age agg agh aha ahb ahd ahe ahg ahh baa bab bad bae bag bah bba bbb bbd bbe bbg bbh bda bdb bdd bde bdg bdh be- bea beb bed bee beg beh bga bgb bgd bge bgg bgh bha bhb bhd bhe bhg bhh daa dab dad dae dag dah dba dbb dbd dbe dbg dbh dda ddb ddd dde ddg ddh de- dea deb ded dee deg deh dga dgd dge dgg dgh dh- dha dhb dhd dhe dhh eaa eab ead eae eag eah eba ebb ebd ebe ebg ebh ed- eda edb edd ede edg edh eea eeb eed eee eeg ega egb egd ege egg egh eha ehb ehd ehe ehg ehh g-d gaa gab gad gae gag gah gba gbd gbe gbg gbh gda gdb gdd gde gdh ge- gea geb ged gee geg geh gga ggb ggd ggg ggh gha ghb ghd ghe ghg ghh haa hab had hae hag hah hba hbb hbd hbe hbg hbh hda hdb hdd hde hdg hdh he- hea heb hed hee heg heh hga hgb hge hgg hgh hha hhb hhd hhe hhg hhh