| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] backed up [prep] a [adj] | 17 |
|
| 2 | be backed up [prep] a [adj] | 17 |
|
| 3 | [was/were] backed up [prep] a [adj] | 6 |
|
| 4 | was backed up [prep] a [adj] | 5 |
|
| 5 | [be] backed up [prep] a [adj] | 5 |
|
| 6 | be backed up [prep] a [adj] | 5 |
|
| 7 | backed up [prep] a [adj] [noun] | 14 |
|
| 8 | backed up [prep] a [adj] [noun sg] | 14 |
|
