| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun sg] have occurred in | 98 |
|
| 2 | [noun sg] has occur in | 66 |
|
| 3 | error have occur in | 19 |
|
| 4 | [noun sg] had occur in | 19 |
|
| 5 | [noun sg] have occur in | 8 |
|
