| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun sg] require a [noun sg] | 199 |
|
| 2 | may require a [noun sg] | 29 |
|
| 3 | [noun sg] may require a | 19 |
|
| 4 | [noun sg] may require [noun sg] | 17 |
|
