| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [vb pp] back [prep] an | 14 |
|
| 2 | [be] [vb pp] back [prep] an | 14 |
|
| 3 | [verb] [vb pp] back [prep] an | 9 |
|
| 4 | have [vb pp] back [prep] an | 9 |
|
| 5 | be [vb pp] back [prep] an | 6 |
|
| 6 | [be] [vb pp] back [prep] an | 6 |
|
| 7 | [adv] [vb pp] back [prep] an | 6 |
|
| 8 | [vb pp] back [prep] an [adj] | 16 |
|
| 9 | [vb pp] back [prep] an [noun sg] | 13 |
|
| 10 | [vb pp] back [prep] an [noun] | 13 |
|
| 11 | [vb pp] back [prep] an [adj] | 13 |
|
