| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have happen a long time | 5 |
|
| 2 | [verb] happen a long time | 5 |
|
| 3 | happen a long time [adv] | 13 |
|
| 4 | happen a long time ago | 13 |
|
| 5 | happen a long time [adv] | 13 |
|
| 6 | happen a long time ago | 13 |
|
