| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | may [adv] be [conj] | 270 |
|
| 2 | [adv] be observed [conj] | 37 |
|
| 3 | may [adv] be observed | 21 |
|
| 4 | may be observed [conj] | 19 |
|
