| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [adv] [vb pp] back [prep] [noun] | 7 |
|
| 2 | [is] [adv] [vb pp] back [prep] [noun] | 7 |
|
| 3 | [is] [adv] [vb pp] back [prep] [noun sg] | 5 |
|
