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