| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [am/are] [prep] [art] [adj] [noun] | 2287 |
|
| 2 | necessary [prep] [art] [adj] [noun] | 253 |
|
| 3 | [am/are] necessary [prep] [art] [noun] | 42 |
|
| 4 | [am/are] necessary [prep] [art] [adj] | 34 |
|
| 5 | [am/are] necessary [prep] [adj] [noun] | 23 |
|
