| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] [v-ing] in a [noun] | 561 |
|
| 2 | be [v-ing] in a [noun] | 561 |
|
| 3 | are [v-ing] [prep] a [noun] | 545 |
|
| 4 | are [verb] in a [noun] | 421 |
|
| 5 | are [v-ing] in [art] [noun] | 282 |
|
| 6 | are [v-ing] in [art] [noun] | 282 |
|
| 7 | [am/are] [v-ing] in a [noun] | 122 |
|
| 8 | are [v-ing] in a [noun] | 81 |
|
