| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [adv] [prep] [v-ing] | 13 |
|
| 2 | have [been] [adv] [prep] [v-ing] | 13 |
|
| 3 | had [been] [adv] [prep] [v-ing] | 9 |
|
