| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been build up [prep] the | 28 |
|
| 2 | have been built up [prep] the | 18 |
|
| 3 | had been build up [prep] the | 17 |
|
| 4 | have been building up [prep] the | 10 |
|
| 5 | has been build up [prep] the | 9 |
|
| 6 | have been build up over the | 8 |
|
| 7 | have been build up over the | 8 |
|
