| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun sg] has occurred [prep] a [adj] | 21 |
|
| 2 | [noun] has occurred [prep] a [adj] | 21 |
|
| 3 | error has occurred [prep] a [adj] | 18 |
|
| 4 | error has occurred [prep] a [adj] | 18 |
|
| 5 | has occurred [prep] a [adj] [noun] | 21 |
|
| 6 | has occurred [prep] a [adj] [noun sg] | 21 |
|
| 7 | has occurred [prep] a [adj] area | 18 |
|
| 8 | has occurred [prep] a [adj] area | 18 |
|
