| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] been built [adv prt] over the | 6 |
|
| 2 | have been built [adv] over the | 6 |
|
| 3 | [verb] been built up over the | 5 |
|
| 4 | [verb] been built up over the | 5 |
|
