| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they had [be] waiting for | 8 |
|
| 2 | they had [been] waiting for | 8 |
|
| 3 | they had be waiting for | 8 |
|
| 4 | they had been waiting for | 8 |
|
| 5 | they had [be] waiting for | 7 |
|
