Find the most common 3-page sequence from the corresponding Apache log.
Assumptions:
- Standard Apache access log.
- An IP is unique per user.
- Log entries are in order.
- 3 Page sequence: 3 consecutive page requests from a user.
Output:
- The sequence
- The number of times that sequence appeared in the Apache log.
Example:
- Sequence (p1,p2,p3) was requested 2 times:
User A: Page 1
User B: Page 1 User B: Page 2 User B: Page 3 User B: Page 2
User A: Page 2 User A: Page 3 User A: Page 4 User A: Page 1 User A: Page 2