| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb base] been work [prep] a | 20 |
|
| 2 | [vb base] been working [prep] a | 19 |
|
| 3 | have been work [prep] a | 13 |
|
| 4 | [vb base] been work on a | 10 |
|
| 5 | 've been work [prep] a | 8 |
|
| 6 | [vb base] been work for a | 5 |
|
