| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] is a | 2127 |
|
| 2 | [v-ing] is [art] | 520 |
|
| 3 | [v-ing] be a | 512 |
|
| 4 | [v-ing] [be] a | 512 |
|
| 5 | [v-ing] [is] a | 304 |
|
