| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] sign up for a [noun] | 7 |
|
| 2 | [verb] sign up for a [noun sg] | 7 |
|
| 3 | have sign up for a [noun] | 6 |
|
| 4 | [verb] signed up for a [noun] | 6 |
|
