| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] happen be | 87 |
|
| 2 | [adv] happen be | 81 |
|
| 3 | usually [verb] be | 53 |
|
| 4 | usually happen be | 7 |
|
| 5 | usually happen [be] | 7 |
|
