| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [v-ing] [adv] | 593 |
|
| 2 | have been [v-ing] on | 92 |
|
| 3 | been [v-ing] [adv] on | 87 |
|
| 4 | have been [adv] on | 10 |
|
