| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [v-ing] for a | 260 |
|
| 2 | and [v-ing] for a | 125 |
|
| 3 | and is [v-ing] a | 70 |
|
| 4 | and is [v-ing] for | 51 |
|
