| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | back [prep] [art] [noun] of | 1321 |
|
| 2 | back [prep] [art] [noun sg] of | 1087 |
|
| 3 | [adv] [prep] [art] time of | 308 |
|
| 4 | back [prep] [art] time [prep] | 28 |
|
| 5 | back [prep] [art] time of | 24 |
|
