| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | i have been working | 150 |
|
| 2 | i 've been working | 90 |
|
| 3 | i have been working | 29 |
|
| 4 | i had been working | 16 |
|
| 5 | i 'd been working | 15 |
|
