| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] been built on a | 11 |
|
| 2 | have been built on a | 11 |
|
| 3 | had been built on a | 5 |
|
| 4 | [vb past] been built on a | 5 |
|
| 5 | [vb -s] been built on a | 5 |
|
| 6 | been built on a [noun] | 6 |
|
| 7 | been built on a [noun sg] | 6 |
|
| 8 | been built on a [adj] | 5 |
|
| 9 | been built on a [adj] | 5 |
|
