| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb pp] to start at | 17 |
|
| 2 | have to start at | 14 |
|
| 3 | [vb past] to start at | 8 |
|
| 4 | [vb infin] to start at | 8 |
|
| 5 | had to start at | 5 |
|
| 6 | have to start at | 5 |
|
