| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | backed up [prep] [art] [adj] [noun sg] | 25 |
|
| 2 | backed up by [art] [adj] [noun sg] | 22 |
|
| 3 | backed up [prep] a [adj] [noun sg] | 14 |
|
| 4 | backed up [prep] the [adj] [noun sg] | 8 |
|
