| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [been] [vb pp] [prep] [num] | 175 |
|
| 2 | [been] [vb pp] [prep] [num] months | 71 |
|
| 3 | [adv] [vb pp] [prep] [num] months | 45 |
|
