| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] often [verb] | 2494 |
|
| 2 | [pron] [adv] happen | 954 |
|
| 3 | [pron] [adv] happen | 948 |
|
| 4 | [pron] often happen | 46 |
|
