| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [vb pp] [prep] longer [noun pl] | 10 |
|
| 2 | be [vb pp] for longer [noun] | 7 |
|
| 3 | be [vb pp] [prep] longer periods | 5 |
|
| 4 | be [vb pp] [prep] longer period | 5 |
|
