| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [am/are] [v-ing] [prep] a | 1795 |
|
| 2 | [am/are] [verb] in a | 1024 |
|
| 3 | [be] [v-ing] in a | 994 |
|
| 4 | [am/are] [v-ing] in [art] | 723 |
|
| 5 | [am/are] [v-ing] in [art] | 723 |
|
| 6 | [am/are] [v-ing] in a | 249 |
|
