| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [v-ing] [prep] a | 33 |
|
| 2 | [vb infin] been [v-ing] [prep] a | 33 |
|
| 3 | [vb infin] been [v-ing] [prep] a | 30 |
|
| 4 | [vb infin] been [v-ing] for a | 6 |
|
| 5 | [vb infin] been [v-ing] to a | 6 |
|
| 6 | [vb infin] been [v-ing] for a | 6 |
|
| 7 | [vb infin] been [v-ing] in a | 6 |
|
| 8 | [vb infin] been [v-ing] to a | 6 |
|
| 9 | [vb infin] been [v-ing] in a | 6 |
|
