| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | i 've been [v-ing] on | 33 |
|
| 2 | i [vb base] been working on | 23 |
|
| 3 | i have been [v-ing] on | 13 |
|
| 4 | i [vb base] been concentrating on | 7 |
|
