a-a a-b a-i a-z aaa aab aad aai aao aaz ab- aba abb abd abi abo abz ad- ada adb add adi ado adz ai- aia aib aid aii aio aiz aoa aob aod aoi aoo az- aza azb azd azi azo azz baa bab bad bai bao baz bba bbb bbd bbi bbo bda bdb bdd bdi bdo bdz bi- bia bib bid bii bio biz boa bob bod boi boo boz bza bzd bzo bzz daa dab dad dai dao daz dba dbb dbd dbi dbo dbz dda ddb ddd ddi ddo ddz di- dia dib did dii dio diz doa dob dod doi doo doz dza dzb dzd dzi dzo i-d ia- iaa iab iad iai iao iaz iba ibb ibd ibi ibo ibz ida idb idd idi ido iia iib iid iii iio io- ioa iob iod ioi ioo iza izi izo izz o-i oaa oab oad oai oao ob- oba obb obd obi obo oda odb odd odi odo oia oib oid oii oio oiz oo- ooa oob ood ooi ooo oza ozo ozz zaa zab zad zai zao zaz zbb zia zib zid zio ziz zo- zoa zob zod zoi zoo zzz