| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | required [to-vb] [det] | 279 |
|
| 2 | required [to-vb] [adj] | 267 |
|
| 3 | required [to-vb] this | 112 |
|
| 4 | required [to-vb] this | 112 |
|
| 5 | required to use [adj] | 67 |
|
| 6 | required [to-vb] [num] | 36 |
|
| 7 | required [to-vb] such | 35 |
|
| 8 | required [to-vb] such | 35 |
|
| 9 | required to make [adj] | 27 |
|
| 10 | required [to-vb] any | 27 |
|
| 11 | required [to-vb] any | 27 |
|
| 12 | required [to-vb] all | 24 |
|
| 13 | required [to-vb] all | 24 |
|
| 14 | required [to-vb] these | 22 |
|
| 15 | required [to-vb] these | 22 |
|
| 16 | required to give [adj] | 21 |
|
| 17 | required [to-vb] that | 20 |
|
| 18 | required [to-vb] that | 20 |
|
| 19 | required to provide [adj] | 19 |
|
| 20 | required to do [adj] | 15 |
|
| 21 | required to produce [adj] | 14 |
|
| 22 | required to achieve [adj] | 13 |
|
| 23 | required to have [adj] | 12 |
|
| 24 | required [to-vb] some | 12 |
|
| 25 | required [to-vb] some | 12 |
|
| 26 | required to obtain [adj] | 11 |
|
| 27 | required [to-vb] one | 10 |
|
| 28 | required to take [adj] | 10 |
|
| 29 | required [to-vb] one | 10 |
|
| 30 | required to undertake [adj] | 9 |
|
