| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun sg] is for [noun] | 318 |
|
| 2 | [noun sg] is required for | 131 |
|
| 3 | [noun sg] required for [noun] | 94 |
|
| 4 | is required for [noun] | 60 |
|
