| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] have been [verb] | 2111 |
|
| 2 | [adv] have been [v-ing] | 200 |
|
| 3 | [adv] [verb] been happening | 6 |
|
| 4 | [adv] have been happening | 6 |
|
| 5 | [adv] have [been] happening | 6 |
|
| 6 | [adv] have been happen | 6 |
|
| 7 | [adv] have be happening | 6 |
|
| 8 | [adv] have [be] happening | 6 |
|
