| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | required [verb] [art] [noun sg] | 673 |
|
| 2 | required [to-vb] [art] [noun sg] | 669 |
|
| 3 | [verb] to perform [art] [noun sg] | 47 |
|
| 4 | [vb pp] to perform [art] [noun sg] | 26 |
|
| 5 | required to perform [art] [noun] | 6 |
|
| 6 | required to perform [art] [noun sg] | 5 |
|
| 7 | require to perform [art] [noun sg] | 5 |
|
| 8 | required perform [art] [noun sg] | 5 |
|
