| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [been] [vb pp] [prep] [num] | 2167 |
|
| 2 | [vb pp] [prep] [num] month | 714 |
|
| 3 | [been] [vb pp] [num] month | 24 |
|
| 4 | [been] [vb pp] [prep] month | 15 |
|
| 5 | [been] [prep] [num] month | 5 |
|
