| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [v-ing] a [noun sg] | 41586 |
|
| 2 | are a [noun sg] | 3957 |
|
| 3 | are [v-ing] a | 1992 |
|
| 4 | are [v-ing] [noun sg] | 1473 |
|
