| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have already been discussed [prep] chapter | 12 |
|
| 2 | [verb] already been discussed [prep] chapter | 12 |
|
| 3 | has already been discussed [prep] chapter | 9 |
|
| 4 | [vb -s] already been discussed [prep] chapter | 9 |
|
| 5 | already been discussed [prep] chapter [adj] | 12 |
|
| 6 | already been discussed [prep] chapter [num] | 12 |
|
