| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [det] [is] [v-ing] | 1942 |
|
| 2 | [det] [is] for | 624 |
|
| 3 | [det] for [v-ing] | 167 |
|
| 4 | [is] for [v-ing] | 134 |
|
