| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | opt out [prep] the national | 10 |
|
| 2 | opt [adv prt] of the national | 10 |
|
| 3 | opt [adv prt] [prep] the national | 10 |
|
| 4 | opt [adv prt] [prep] the national | 10 |
|
| 5 | opt [adv prt] of the national | 10 |
|
| 6 | opting [adv prt] [prep] the national | 6 |
|
