| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it must [adv] | 542 |
|
| 2 | it must [adv] | 383 |
|
| 3 | it [vb mod] either | 72 |
|
| 4 | it [modal v] either | 72 |
|
| 5 | [pron] must either | 48 |
|
| 6 | [pers pn] must either | 41 |
|
| 7 | it must either | 11 |
|
| 8 | it must either | 11 |
|
| 9 | it must either | 11 |
|
