| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv prt] [art] challenge to | 10 |
|
| 2 | [adv prt] a challenge to | 6 |
|
| 3 | [adv prt] a challenge to | 6 |
|
| 4 | out [art] challenge to | 5 |
|
