| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [am/are] [v-ing] a | 3577 |
|
| 2 | [am/are] [v-ing] [unc] | 213 |
|
| 3 | [v-ing] a [unc] | 207 |
|
| 4 | [am/are] a [unc] | 36 |
|
