a-a aaa aad aae aaf aah ad- ada add ade adf adh aea aed aee aef aeh af- afa afd afe aff afh aha ahd ahe ahf ahh daa dad dae daf dah dda ddd dde ddf ddh de- dea ded dee def deh dfa dfd dfe dff dfh dh- dha dhd dhe dhf dhh eaa ead eae eaf eah ed- eda edd ede edf edh eea eed eee eef ef- efa efd efe eff efh eha ehd ehe ehf ehh faa fad fae faf fah fda fdd fde fdf fdh fea fed fee fef feh ffa ffd ffe fff ffh fha fhe fhf fhh haa had hae haf hah hda hdd hde hdf hdh he- hea hed hee hef heh hfa hfd hfe hff hfh hha hhd hhe hhf hhh