| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [verb] a [n mass] | 341 |
|
| 2 | be require [verb] a | 259 |
|
| 3 | be require [verb] [n mass] | 10 |
|
| 4 | require [verb] a [n mass] | 9 |
|
