| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [v-ing] [noun] [prep] a | 3822 |
|
| 2 | [is] [v-ing] [noun] [prep] | 1400 |
|
| 3 | [is] [v-ing] [prep] a | 1210 |
|
| 4 | [is] [noun] [prep] a | 824 |
|
| 5 | [is] [v-ing] [noun] a | 38 |
|
