| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [am/are] [v-ing] [prep] [art] | 5335 |
|
| 2 | [be] [v-ing] to [art] | 2631 |
|
| 3 | [am/are] [verb] to [art] | 2561 |
|
