| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] [prep] [been] [num] | 17 |
|
| 2 | [vb mod] of [been] [num] | 17 |
|
| 3 | [vb mod] of [been] [num] | 17 |
|
| 4 | [vb mod] [prep] been [num] | 17 |
|
| 5 | must [prep] [been] [num] | 10 |
|
