a-a a-b a-i a-z aaa aab aad aai aak aao aas aaz ab- aba abb abd abi abk abo abs abz ad- ada adb add adi adk ado ads adz ai- aia aib aid aii aik aio ais aiz aka akb akd aki akk ako aks aoa aob aod aoi aok aoo aos as- asa asb asd asi ask aso ass asz az- aza azb azd azi azo azs azz baa bab bad bai bak bao bas baz bba bbb bbd bbi bbk bbo bbs bda bdb bdd bdi bdk bdo bds bdz bi- bia bib bid bii bik bio bis biz bka bkb bkk bko bks boa bob bod boi bok boo bos boz bsa bsb bsd bsi bsk bso bss bza bzd bzo bzs bzz daa dab dad dai dak dao das daz dba dbb dbd dbi dbk dbo dbs dbz dda ddb ddd ddi ddk ddo dds ddz di- dia dib did dii dik dio dis diz dka dkb dki dkk dko dks doa dob dod doi dok doo dos doz dsa dsb dsd dsi dsk dso dss dsz dza dzb dzd dzi dzo dzs i-d ia- iaa iab iad iai iao ias iaz iba ibb ibd ibi ibk ibo ibs ibz ida idb idd idi idk ido ids iia iib iid iii iio iis ika ikb iki ikk iko iks io- ioa iob iod ioi ioo ios is- isa isb isd isi isk iso iss iza izi izo izz k-z ka- kaa kab kad kai kak kao kas kaz kba kbb kbd kbi kbk kbo kbs kbz kda kdb kdk kdo kds kia kib kid kii kik kio kis kiz kkb kki kkk kks koa kob kod koi kok koo kos koz ksa ksb ksd ksi ksk kso kss kzo o-i oaa oab oad oai oak oao oas ob- oba obb obd obi obk obo obs oda odb odd odi odo ods oia oib oid oii oik oio ois oiz oka okb okd oki okk oko oks oo- ooa oob ood ooi ook ooo oos os- osa osb osd osi osk oso oss oza ozo ozs ozz saa sab sad sai sak sao sas saz sba sbb sbd sbi sbk sbo sbs sda sdb sdd sdi sdk sdo sds sdz sia sib sid sii sik sio sis sk- ska skb skd ski skk sko sks soa sob sod soi sok soo sos soz ss- ssa ssb ssd ssi ssk sso sss ssz sza szd szi zaa zab zad zai zak zao zas zaz zbb zbs zds zia zib zid zik zio zis ziz zka zks zo- zoa zob zod zoi zok zoo zos zsa zsi zsz zzs zzz