| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] be [v-ing] [adv] a | 76 |
|
| 2 | [vb mod] be [verb] [adv] a | 54 |
|
| 3 | [vb mod] be [v-ing] [adv] [art] | 45 |
|
| 4 | [vb mod] [be] [v-ing] [adv] a | 24 |
|
| 5 | [modal v] be [v-ing] [adv] a | 24 |
|
