E-flat Major: E-flat, G-natural, B-Flat E-flat minor: E-flat, G-flat, B-Flat
B flat, D, F, A flat
Eb G Bb and Db
The B major chord. Technically that one has B-natural and D-sharp, while a C-flat major-third is C-flat and E-flat. And the C-flat major key signature has all seven notes flatted.
E flat F G A flat B flat C D E flat