| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [v-ing] the [noun sg] [prep] | 14 |
|
| 2 | have been [v-ing] [art] [noun sg] of | 10 |
|
| 3 | have been [v-ing] a [noun sg] [prep] | 9 |
|
