| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [verb] for [num] years | 493 |
|
| 2 | [modal v] be [verb] for [num] | 151 |
|
| 3 | [modal v] [verb] for [num] years | 36 |
|
| 4 | [modal v] be [verb] [num] years | 9 |
|
| 5 | [modal v] be [verb] for years | 8 |
|
| 6 | [modal v] be for [num] years | 7 |
|
