-er a-a a-b a-z aaa aab aae aaj aak aar aaz ab- aba abb abe abj abk abr abz aea aeb aee aej aek aer aez aja ajb aje ajj ajk ajr aka akb ake akj akk akr ar- ara arb are arj ark arr arz az- aza azb aze azz baa bab bae baj bak bar baz bba bbb bbe bbk bbr be- bea beb bee bek ber bez bja bjj bjk bjr bka bkb bke bkk bkr bra brb bre brj brk brr brz bza bze bzr bzz eaa eab eae eaj eak ear eaz eba ebb ebe ebj ebk ebr eea eeb eee eek eer eja eka ekb eke ekr era erb ere erk err erz eze ezr ezz j-z jaa jab jae jaj jak jar jaz jba jbj jbk jbr jbz jea jeb jee jej jek jer jez jja jjb jjj jjk jjr jka jkb jkk jkr jra jrb jrk jrr jrz k-z ka- kaa kab kae kaj kak kar kaz kba kbb kbe kbk kbr kbz ke- kea keb kee kek ker kez kjb kje kjr kkb kke kkk kkr kra krk krr ra- raa rab rae raj rak rar raz rba rbb rbe rbk rbr re- rea reb ree rek rer rez rja rjk rjr rkb rke rkk rkz rra rrb rrk rrr rza rzb rze zaa zab zaj zak zar zaz zbb zbr zea zeb zee zek zer zez zje zka zzr zzz