| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have signed up for | 33 |
|
| 2 | has signed [adv prt] for | 12 |
|
| 3 | have signed [adv prt] for | 12 |
|
| 4 | had signed [adv prt] for | 6 |
|
