| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be for [num] years | 67 |
|
| 2 | [be] for [num] years | 67 |
|
| 3 | been for [adj] years | 53 |
|
| 4 | been for [num] [noun] | 25 |
|
| 5 | been for [num] [noun pl] | 23 |
|
| 6 | been [prep] [num] years | 22 |
|
| 7 | [been] for [num] years | 17 |
|
| 8 | been for [num] year | 17 |
|
