| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [to-vb] [prep] [noun] | 1353 |
|
| 2 | be back [prep] [noun] | 988 |
|
| 3 | [to-vb] back [prep] [noun] | 763 |
|
| 4 | be [to-vb] back [prep] | 88 |
|
