| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] be require [prep] [det] | 8 |
|
| 2 | [conj] be required [prep] [det] | 8 |
|
| 3 | [conj] is require [prep] [det] | 7 |
|
| 4 | [subord] be require [prep] [det] | 5 |
|
