| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [det] been [vb pp] [prep] [num] [noun pl] | 6 |
|
| 2 | each been [vb pp] [prep] [num] [noun] | 6 |
|
| 3 | [det] been [vb pp] [prep] [num] years | 5 |
|
| 4 | [det] been [vb pp] [prep] [num] year | 5 |
|
