| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] be based [prep] [noun] which | 7 |
|
| 2 | [modal v] be based [prep] [noun] [Wh det] | 7 |
|
| 3 | [vb mod] be based [prep] [noun] [Wh det] | 7 |
|
| 4 | [modal v] be based on [noun] [Wh det] | 7 |
|
| 5 | [modal v] be based [prep] [noun pl] [Wh det] | 6 |
|
