| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | i have been trying | 174 |
|
| 2 | i 've been trying | 128 |
|
| 3 | i have been trying | 27 |
|
| 4 | i had been trying | 10 |
|
| 5 | i 'd been trying | 9 |
|
