| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] have [be] [num] years | 22 |
|
| 2 | [modal v] have be [num] years | 22 |
|
| 3 | [modal v] have [been] [num] years | 22 |
|
| 4 | [modal v] have been [num] years | 22 |
|
| 5 | would have [be] [num] years | 13 |
|
| 6 | would have [be] [num] years | 12 |
|
