| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | up [prep] a [noun] | 4436 |
|
| 2 | sign [prep] a [noun] | 91 |
|
| 3 | sign up [prep] [noun] | 51 |
|
| 4 | sign up [prep] a | 49 |
|
