| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | i [vb base] been [v-ing] | 2165 |
|
| 2 | i [vb base] not been | 448 |
|
| 3 | [vb base] not been [v-ing] | 170 |
|
| 4 | i [vb base] not [v-ing] | 17 |
|
