| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [is] [verb] [adj] [noun pl] | 984 |
|
| 2 | required [verb] [adj] [noun pl] | 107 |
|
| 3 | [is] required [verb] [adj] | 31 |
|
| 4 | [is] required [verb] [noun pl] | 21 |
|
