Answer:
first row (circle with 6): F, E, A, G, F, D, A, C, D, F, G, C, E, D, B, F
second row (circle with 7): G, A, B, E, G, F, C, A, E, G, A, B, G, G, D, B
third row (circle with 8): E, A, E, D, F, C, E, G
fourth row (circle with 9): B, G, A, E G, E, A, D
fifth row (circle with 10): E, E, A, G, F, D, A, C, F, F, G, C, E, D, B, F
sixth row (circle with 11): G, A, B, E, G, F, C, A, E, G, A, B, G, G, D, B
seventh row (circle with 12): E, B, E, G, D, G, E, B
eighth row (circle with 13): A, F, A, C A, G, G, C
Step-by-step explanation:
(view my image files, you just got to match them 1 by 1)