| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] been [v-ing] [prep] a | 594 |
|
| 2 | [vb infin] been [verb] [prep] a | 534 |
|
| 3 | [vb infin] been [v-ing] [prep] [art] | 122 |
|
| 4 | [vb infin] [be] [v-ing] [prep] a | 34 |
|
| 5 | [vb infin] be [v-ing] [prep] a | 34 |
|
| 6 | [vb infin] [been] [v-ing] [prep] a | 33 |
|
| 7 | [vb infin] been [v-ing] [prep] a | 33 |
|
