| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | i have been [v-ing] on | 62 |
|
| 2 | i 've been [v-ing] on | 33 |
|
| 3 | i have been working on | 31 |
|
| 4 | i have been [v-ing] on | 13 |
|
| 5 | i 'd been [v-ing] on | 9 |
|
| 6 | i had been [v-ing] on | 7 |
|
| 7 | i have been concentrating on | 7 |
|
