| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] [verb] [prep] [be] [vb pp] | 329 |
|
| 2 | [be] require [prep] [be] [vb pp] | 89 |
|
| 3 | [be] require [prep] [be] [vb pp] | 17 |
|
| 4 | [be] require [prep] [be] [verb] | 17 |
|
