| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] have been [v-ing] a [adj] | 13 |
|
| 2 | [vb mod] have [been] [v-ing] a [adj] | 13 |
|
| 3 | may have [been] [v-ing] a [adj] | 7 |
|
