| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [is] [adv] [verb] [prep] [v-ing] | 579 |
|
| 2 | [is] perhaps [adv] [verb] [prep] | 53 |
|
| 3 | perhaps [adv] [verb] [prep] [v-ing] | 9 |
|
