| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [is] [v-ing] for | 13 |
|
| 2 | [verb] is [v-ing] for | 12 |
|
| 3 | [vb base] [is] [v-ing] for | 5 |
|
| 4 | do [is] [v-ing] for | 5 |
|
