| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun sg] [be] [verb] a | 4574 |
|
| 2 | [noun sg] [be] [v-ing] [art] | 4252 |
|
| 3 | [noun sg] [be] [v-ing] [art] | 4252 |
|
| 4 | [noun] [be] [v-ing] a | 4123 |
|
| 5 | [noun sg] [be] [v-ing] a | 2223 |
|
