| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] be for [num] years | 13 |
|
| 2 | [verb] [be] for [num] years | 13 |
|
| 3 | [verb] been for [num] years | 11 |
|
| 4 | [verb] [been] for [num] years | 11 |
|
| 5 | have [be] for [num] years | 11 |
|
| 6 | [vb -s] [be] for [num] years | 7 |
|
