| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv prt] on a | 1739 |
|
| 2 | [been] on a | 179 |
|
| 3 | [been] [adv prt] on | 62 |
|
| 4 | [been] [adv prt] a | 34 |
|
