| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | back and wait for | 24 |
|
| 2 | back and wait for | 24 |
|
| 3 | back and wait for | 8 |
|
| 4 | back and wait for | 5 |
|
| 5 | back and waited for | 5 |
|
