| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been worked out [prep] | 20 |
|
| 2 | [vb -s] been worked out [prep] | 8 |
|
| 3 | has been worked out [prep] | 8 |
|
| 4 | [verb] been worked out by | 6 |
|
| 5 | [vb base] been worked out [prep] | 5 |
|
| 6 | have been worked out [prep] | 5 |
|
