Just in case you need some pretty beefy save codes for a 34 year old #gameboy game:
ULY6 E6DF - First Town
T61G 47FB - Second Town
F0FU FR96 - Third Town
PFXQ WZCA - Fourth Town
PFXY 0ZGM - Fifth Town
DAJG PL19 - Final Town (right before the final boss)