a-a a-b a-z aaa aab aae aaj aak aao aaz ab- aba abb abe abj abk abo abz aea aeb aee aej aek aeo aez aja ajb aje ajj ajk ajo aka akb ake akj akk ako aoa aob aoe aoj aok aoo az- aza azb aze azo azz baa bab bae baj bak bao baz bba bbb bbe bbk bbo be- bea beb bee bek beo bez bja bjj bjk bka bkb bke bkk bko boa bob boe boj bok boo boz bza bze bzo bzz eaa eab eae eaj eak eao eaz eba ebb ebe ebj ebk ebo eea eeb eee eek eeo eja ejo eka ekb eke eko eo- eoa eob eoe eok eoo eze ezo ezz j-z jaa jab jae jaj jak jao jaz jba jbj jbk jbo jbz jea jeb jee jej jek jeo jez jja jjb jjj jjk jka jkb jkk jko joa job joe joj jok joo k-z ka- kaa kab kae kaj kak kao kaz kba kbb kbe kbk kbo kbz ke- kea keb kee kek keo kez kjb kje kkb kke kkk koa kob koe kok koo koz kzo oaa oab oae oaj oak oao ob- oba obb obe obj obk obo oea oeb oee oeo oja ojb oje ojo oka okb oke okj okk oko oo- ooa oob ook ooo oza oze ozo ozz zaa zab zaj zak zao zaz zbb zea zeb zee zek zeo zez zje zka zo- zoa zob zoe zok zoo zzz