| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [is] [adv] [v-ing] | 9714 |
|
| 2 | [noun prp] [is] [adv] | 9656 |
|
| 3 | [noun prp] [is] [v-ing] | 6998 |
|
| 4 | [noun prp] [adv] [v-ing] | 815 |
|
