Phases of Cycles

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A is in phase with
1. I
2. H
3. F
4. C
F is 180^o out-of-phase with
1. D
2. A
3. I
4. G
Which letter is 90^o ahead of J?
1. H
2. K
3. I
4. L
Which letter is in-phase with L?
1. H
2. M
3. J
4. C
Which letter is 180^o out-of-phase with M?
1. D
2. A
3. H
4. C
Which letter is 270^o out-of-phase with E?
1. C
2. J
3. M
4. H
Which letter shows a pendulum that is in-phase with pendulum A?
1. G
2. E
3. H
4. F
Which letter shows a pendulum that is in-phase with pendulum B?
1. E
2. F
3. H
4. G
Which letter shows a pendulum that is in-phase with pendulum C?
1. H
2. G
3. E
4. F
Which letter shows a pendulum that is in-phase with pendulum D?
1. F
2. H
3. G
4. E
Which letter shows a pendulum that is 180^o out-of-phase with pendulum A?
1. G
2. H
3. F
4. E
Which letter shows a pendulum that is 180^o out-of-phase with pendulum B?
1. E
2. F
3. H
4. G
Which letter shows a pendulum that is 180^o out-of-phase with pendulum C?
1. E
2. G
3. F
4. H
Which letter shows a pendulum that is 90^o ahead of pendulum D?
1. H
2. G
3. E
4. F
Which letter shows a pendulum that is 90^o behind pendulum A?
1. F
2. H
3. G
4. E
Which letter shows a pendulum that is 360^o out-of-phase with pendulum C?
1. G
2. H
3. E
4. F