| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | back up [prep] the [adj] [noun] | 18 |
|
| 2 | back up [prep] the [adj] [noun sg] | 17 |
|
| 3 | back up by the [adj] [noun] | 13 |
|
| 4 | backed up [prep] the [adj] [noun] | 9 |
|
| 5 | backed up [prep] the [adj] [noun] | 8 |
|
