-ic a-a a-b a-c a-i a-z aaa aab aac aad aai aak aaz ab- aba abb abc abd abi abk abz ac- aca acb acc acd aci ack acz ad- ada adb adc add adi adk adz ai- aia aib aic aid aii aik aiz aka akb akc akd aki akk az- aza azb azd azi azz baa bab bac bad bai bak baz bba bbb bbc bbd bbi bbk bca bcb bcc bcd bci bck bcz bda bdb bdc bdd bdi bdk bdz bi- bia bib bic bid bii bik biz bka bkb bkc bkk bza bzd bzz c-- caa cab cac cad cai cak caz cba cbb cbc cbd cbi cbk cbz cca ccb ccc ccd cci cck ccz cda cdb cdc cdd cdi cdk cdz ci- cia cib cic cid cii cik cka ckb ckc ckd cki cz- czc czd czk daa dab dac dad dai dak daz dba dbb dbc dbd dbi dbk dbz dca dcb dcc dcd dci dck dda ddb ddc ddd ddi ddk ddz di- dia dib dic did dii dik diz dka dkb dkc dki dkk dza dzb dzd dzi i-d ia- iaa iab iac iad iai iaz iba ibb ibc ibd ibi ibk ibz ica icb icc icd ici ick icz ida idb idc idd idi idk iia iib iic iid iii ika ikb ikc iki ikk iza izi izz k-z ka- kaa kab kac kad kai kak kaz kba kbb kbc kbd kbi kbk kbz kca kcb kcc kcd kci kck kda kdb kdc kdk kia kib kic kid kii kik kiz kkb kkc kki kkk zaa zab zac zad zai zak zaz zbb zbc zia zib zid zik ziz zka zzz