| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | to have been [v-ing] [art] [noun sg] | 19 |
|
| 2 | [to-vb] been [v-ing] the [noun sg] | 12 |
|
| 3 | [to-vb] been [v-ing] a [noun sg] | 5 |
|
