| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [verb] for this | 76 |
|
| 2 | is [vb pp] for this | 71 |
|
| 3 | is required for [adj] | 63 |
|
| 4 | is required for [det] | 30 |
|
| 5 | [be] required for this | 17 |
|
| 6 | be required for this | 17 |
|
| 7 | is required [prep] this | 16 |
|
| 8 | is required [prep] this | 16 |
|
| 9 | is required for this | 10 |
|
| 10 | is required for this | 10 |
|
| 11 | [is] required for this | 10 |
|
| 12 | is require for this | 10 |
|
