| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they [vb base] been [v-ing] | 494 |
|
| 2 | [vb base] been [v-ing] to | 188 |
|
| 3 | they [vb base] [v-ing] to | 26 |
|
| 4 | they [vb base] been to | 18 |
|
