| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [am/are] [verb] [v-ing] [prep] | 207 |
|
| 2 | [verb] [is] [v-ing] [prep] | 113 |
|
| 3 | [am/are] [verb] [is] [v-ing] | 100 |
|
| 4 | [am/are] [verb] [is] [prep] | 36 |
|
