a-a a-b a-i a-z aaa aab aad aai aak aar aaz ab- aba abb abd abi abk abr abz ad- ada adb add adi adk adr adz ai- aia aib aid aii aik air aiz aka akb akd aki akk akr ar- ara arb ard ari ark arr arz az- aza azb azd azi azz baa bab bad bai bak bar baz bba bbb bbd bbi bbk bbr bda bdb bdd bdi bdk bdr bdz bi- bia bib bid bii bik bir biz bka bkb bkk bkr bra brb brd bri brk brr brz bza bzd bzr bzz daa dab dad dai dak dar daz dba dbb dbd dbi dbk dbr dbz dda ddb ddd ddi ddk ddr ddz di- dia dib did dii dik dir diz dka dkb dki dkk dkr dra drb drd dri drk drr drz dza dzb dzd dzi dzr i-d ia- iaa iab iad iai iar iaz iba ibb ibd ibi ibk ibr ibz ida idb idd idi idk idr iia iib iid iii iir ika ikb iki ikk ikr ir- ira irb ird iri irk irr iza izi izz k-z ka- kaa kab kad kai kak kar kaz kba kbb kbd kbi kbk kbr kbz kda kdb kdk kdr kia kib kid kii kik kir kiz kkb kki kkk kkr kra krd kri krk krr ra- raa rab rad rai rak rar raz rba rbb rbd rbi rbk rbr rda rdb rdd rdi rdr ria rib rid rii rik rir riz rkb rkk rkz rra rrb rrd rri rrk rrr rza rzb zaa zab zad zai zak zar zaz zbb zbr zia zib zid zik zir ziz zka zzr zzz