| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [been] engage in a | 14 |
|
| 2 | have [been] engage in a | 14 |
|
| 3 | had [been] engage in a | 9 |
|
| 4 | [vb past] [been] engage in a | 9 |
|
| 5 | [been] engage in a [noun] | 8 |
|
| 6 | [been] engage in a [noun sg] | 6 |
|
| 7 | [been] engage in a [adj] | 6 |
|
| 8 | [been] engage in a [adj] | 6 |
|
