| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [v-ing] a [noun] | 43505 |
|
| 2 | am a [noun] | 519 |
|
| 3 | am [v-ing] a | 165 |
|
| 4 | am [v-ing] [noun] | 131 |
|
