| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been work [prep] a | 66 |
|
| 2 | have been working [prep] a | 65 |
|
| 3 | have been work on a | 28 |
|
| 4 | had been work [prep] a | 25 |
|
| 5 | has been work [prep] a | 16 |
|
| 6 | have been work as a | 14 |
|
| 7 | have been work [prep] a | 13 |
|
| 8 | have been work for a | 9 |
|
| 9 | 've been work [prep] a | 8 |
|
| 10 | have been work in a | 8 |
|
| 11 | have been work [prep] an | 6 |
|
| 12 | have been worked [prep] a | 5 |
|
