| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] [v-ing] [prep] [adv] | 1462 |
|
| 2 | be [v-ing] [prep] [adv] | 1461 |
|
| 3 | is [verb] [prep] [adv] | 1278 |
|
| 4 | [is] [v-ing] [prep] [adv] | 243 |
|
| 5 | is [v-ing] [prep] [adv] | 158 |
|
| 6 | is [v-ing] [prep] [adv] | 146 |
|
