For memorizing the scale degrees
Ionian (Major Scale)
1, 2, 3, 4, 5, 6, 7, (8)
W, W, h, W, W, W, h
Dorian 2
1, 2, b3, 4, 5, 6, b7, (8)
W, h, W, W, W, h, W
Phrygian 3
1, b2, b3, 4, 5, b6, b7, (8)
h, h, W, W, h, W, W
Lydian 4
1, 2, 3, #4, 5, 6, 7, (8)
W, W, h, W, W, W, h
Mixolydian 5
1, 2, 3, 4, 5, 6, b7 (8)
W, W, h, W, W, h, W
Aeolian 6
1, 2, b3, 4, 5, b6, b7 (8)
W, h, W, W, h, W, W
Locrian 7
1, b2, b3, 4, b5, b6, b7, (8)
h, h, W, h, h, h, W