| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they have been [v-ing] for | 84 |
|
| 2 | they have [been] [v-ing] for | 84 |
|
| 3 | they had [been] [v-ing] for | 35 |
|
| 4 | they 've [been] [v-ing] for | 28 |
|
| 5 | they have [been] waiting for | 17 |
|
| 6 | they have [been] [v-ing] for | 14 |
|
| 7 | they 'd [been] [v-ing] for | 7 |
|
| 8 | they have [been] looking for | 6 |
|
