Diatonic -2b,-3b,-4b,-3b, -2b,-3b,-4b,-3b, -2b,-3b,-4b,-3b, -2b,-3b,-4b,-3b, 4,5,6,5, 4,5,6,5, -2b,-3b,-4b,-3b, -2b,-3b,-4b,-3b, -4b,-5b,-6b,-5b, 4,5,6,5, -2b,-3b,-4b,-3b, -4b,-5b,-6b,-5b