| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | been [v-ing] [prep] a | 665 |
|
| 2 | also [v-ing] [prep] a | 92 |
|
| 3 | also been [v-ing] [prep] | 32 |
|
| 4 | also been [v-ing] a | 8 |
|
