| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | was heading for | 63 |
|
| 2 | be heading for | 61 |
|
| 3 | is heading for | 53 |
|
| 4 | were heading for | 49 |
|
| 5 | are heading for | 45 |
|
| 6 | 're heading for | 14 |
|
| 7 | 's heading for | 8 |
|
| 8 | been heading for | 7 |
|
