| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they [verb] build up a | 13 |
|
| 2 | they have build up a | 12 |
|
| 3 | they [vb base] build up a | 11 |
|
| 4 | they have build up a | 7 |
|
| 5 | they build up a [noun sg] | 6 |
|
| 6 | they build up a [noun] | 6 |
|
