| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [adv] catch up [prep] a | 5 |
|
| 2 | [be] [adv] catch up [prep] a | 5 |
|
| 3 | [adv] catch up [prep] a [adj] | 6 |
|
| 4 | [adv] catch up [prep] a [adj] | 6 |
|
