| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [Wh det] had | 5502 |
|
| 2 | [noun sg] [Wh det] had | 3420 |
|
| 3 | system [Wh det] [verb] | 534 |
|
| 4 | system [Wh det] [vb past] | 167 |
|
| 5 | system [Wh det] have | 96 |
|
| 6 | system [pron] had | 53 |
|
| 7 | system [Wh det] had | 41 |
|
