a-a a-b a-i a-z aaa aab aad aaf aai aan aao aaz ab- aba abb abd abf abi abn abo abz ad- ada adb add adf adi adn ado adz af- afa afb afd aff afi afn afo afz ai- aia aib aid aif aii ain aio aiz an- ana anb and anf ani ann ano anz aoa aob aod aof aoi aon aoo az- aza azb azd azf azi azn azo azz baa bab bad baf bai ban bao baz bba bbb bbd bbf bbi bbn bbo bda bdb bdd bdf bdi bdo bdz bfa bfb bfd bff bfi bfn bfo bfz bi- bia bib bid bif bii bin bio biz bna bnb bnd bnf bni bnn bno bnz boa bob bod bof boi bon boo boz bza bzd bzf bzn bzo bzz daa dab dad daf dai dan dao daz dba dbb dbd dbf dbi dbn dbo dbz dda ddb ddd ddf ddi ddn ddo ddz dfa dfb dfd dff dfi dfn dfo dfz di- dia dib did dif dii din dio diz dna dnb dnd dnf dni dnn dno dnz doa dob dod dof doi don doo doz dza dzb dzd dzi dzo faa fab fad faf fai fan fao faz fba fbb fbd fbf fbi fbn fbo fda fdb fdd fdf fdi fdn fdo ffa ffd fff ffi ffn ffo ffz fia fib fid fif fii fin fiz fna fnb fnd fnf fni fnn fnz foa fob fof foi fon foo foz fzd i-d i-f ia- iaa iab iad iaf iai ian iao iaz iba ibb ibd ibf ibi ibn ibo ibz ida idb idd idf idi idn ido ifa ifb ifd iff ifi ifn ifo ifz iia iib iid iif iii iin iio in- ina inb ind inf ini inn ino io- ioa iob iod iof ioi ion ioo iza izi izo izz n-i naa nab nad naf nai nan nao naz nba nbb nbd nbf nbi nbn nbo nda ndb ndd ndf ndi ndn ndo nfa nfb nfd nff nfi nfn nfo nia nib nid nif nii nin nio niz nna nnb nnf nni nnn nno nnz no- noa nob nod nof noi non noo noz nzb nzd nzf nzi nzo nzz o-i oaa oab oad oaf oai oan oao ob- oba obb obd obf obi obn obo oda odb odd odf odi odn odo of- ofa ofb ofd off ofi ofn ofo ofz oia oib oid oif oii oin oio oiz on- ona onb ond onf oni onn ono oo- ooa oob ood oof ooi oon ooo oza ozo ozz zaa zab zad zaf zai zan zao zaz zbb zdf zfa zfd zfn zia zib zid zif zin zio ziz znd znn zno zo- zoa zob zod zof zoi zon zoo zzz