| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] [vb past] started [adv] [prep] a | 5 |
|
| 2 | [Wh det] [vb past] start [adv] [prep] a | 5 |
|
| 3 | [Wh det] had start [adv] [prep] a | 5 |
|
