| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [is] [v-ing] [prep] | 15735 |
|
| 2 | [v-ing] [prep] [vb infin] | 9629 |
|
| 3 | [is] [v-ing] [vb infin] | 10 |
|
| 4 | [is] [prep] [vb infin] | 10 |
|
