| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they [vb past] been waiting for | 11 |
|
| 2 | they [vb past] [been] waiting for | 11 |
|
| 3 | they [vb past] be waiting for | 11 |
|
| 4 | they [vb past] [be] waiting for | 10 |
|
| 5 | they had [be] waiting for | 8 |
|
