| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [is] [v-ing] [adv] [art] | 496 |
|
| 2 | [is] [v-ing] [adv prt] [art] | 359 |
|
| 3 | [be] [v-ing] back [art] | 54 |
|
| 4 | [is] [verb] back [art] | 19 |
|
| 5 | [is] [v-ing] back [art] | 12 |
|
| 6 | [is] [v-ing] back [art] | 12 |
|
