| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | i [vb base] [been] [v-ing] [prep] | 637 |
|
| 2 | [subord] i [vb base] [been] [v-ing] | 128 |
|
| 3 | [subord] i [vb base] [been] [prep] | 87 |
|
| 4 | [subord] i [vb base] [v-ing] [prep] | 31 |
|
