| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it may [be] [adj] | 1788 |
|
| 2 | it may [be] [adj] | 1529 |
|
| 3 | it [modal v] [be] essential | 35 |
|
| 4 | it [vb mod] [be] essential | 35 |
|
| 5 | [pron] may [be] essential | 11 |
|
| 6 | [pers pn] may [be] essential | 9 |
|
| 7 | it may [be] essential | 7 |
|
| 8 | it may [be] essential | 7 |
|
| 9 | it may [be] essential | 7 |
|
| 10 | it may [be] essential | 7 |
|
