| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [prep] a [noun] | 174585 |
|
| 2 | [noun] back [prep] [noun] | 1812 |
|
| 3 | back [prep] a [noun] | 921 |
|
| 4 | [noun] back [prep] a | 169 |
|
| 5 | [noun] back a [noun] | 24 |
|
