The activities are:
- A: No predecessors, 3 days
- B: Predecessor A, 2 days
- C: No predecessors, 5 days
- D: Predecessor B, 6 days
- E: Predecessor B, 7 days
- F: Predecessor C, 5 days
- G: Predecessor D, 6 days
- H: Predecessors E and F, 2 days
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