Consider the following statements:
1. There are six villages A, B, C, D, E and F.
2. F is 1 km to the west of D.
3. B is 1 km to the east of E.
4. A is 2 km to the north of E.
5. C is 1 km to the east of A.
6. D is 1 km to the south of A.
Which three villages are in a line ?