| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | sign up [prep] a [noun] | 24 |
|
| 2 | sign up [prep] a [noun sg] | 21 |
|
| 3 | sign up for a [noun] | 20 |
|
| 4 | signed up [prep] a [noun] | 10 |
|
| 5 | to sign up [prep] a [noun] | 6 |
|
