| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | not been [prep] school | 13 |
|
| 2 | not been [prep] school | 7 |
|
| 3 | n't been [prep] school | 6 |
|
| 4 | not been to school | 6 |
|
| 5 | not been to school | 6 |
|
