| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb pp] [num] years | 1118 |
|
| 2 | [been] [vb pp] [num] | 402 |
|
| 3 | [been] [num] years | 121 |
|
| 4 | [been] [vb pp] years | 12 |
|
