| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] be [prep] [det] | 220 |
|
| 2 | [vb past] [prep] [det] years | 119 |
|
| 3 | be [prep] [det] years | 92 |
|
| 4 | [vb past] be [prep] years | 8 |
|
