a-a a-b a-z aaa aab aad aae aah aaz ab- aba abb abd abe abh abz ad- ada adb add ade adh adz aea aeb aed aee aeh aez aha ahb ahd ahe ahh ahz az- aza azb azd aze azz baa bab bad bae bah baz bba bbb bbd bbe bbh bda bdb bdd bde bdh bdz be- bea beb bed bee beh bez bha bhb bhd bhe bhh bza bzd bze bzh bzz daa dab dad dae dah daz dba dbb dbd dbe dbh dbz dda ddb ddd dde ddh ddz de- dea deb ded dee deh dez dh- dha dhb dhd dhe dhh dza dzb dzd dze eaa eab ead eae eah eaz eba ebb ebd ebe ebh ed- eda edb edd ede edh eea eeb eed eee eha ehb ehd ehe ehh eze ezh ezz haa hab had hae hah haz hba hbb hbd hbe hbh hbz hda hdb hdd hde hdh hdz he- hea heb hed hee heh hez hha hhb hhd hhe hhh hhz hzd hze zaa zab zad zah zaz zbb zea zeb zed zee zeh zez zha zhe zzz