| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had built up [art] [noun] | 18 |
|
| 2 | had build up [art] [noun sg] | 18 |
|
| 3 | had build up a [noun] | 10 |
|
| 4 | had build up the [noun] | 6 |
|
