| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [v-ing] back [prep] [art] [adj] | 7 |
|
| 2 | [is] [v-ing] back [prep] [art] [adj] | 7 |
|
| 3 | [is] [v-ing] back [prep] the [adj] | 6 |
|
