| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb base] been [v-ing] | 6806 |
|
| 2 | i [vb base] been | 5887 |
|
| 3 | i [vb base] [v-ing] | 2237 |
|
| 4 | i been [v-ing] | 32 |
|
