| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [vb -s] sign up [prep] [art] | 9 |
|
| 2 | [noun prp] [vb -s] sign up [prep] [art] | 5 |
|
| 3 | [vb -s] sign up [prep] [art] [adj] | 7 |
|
