| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [adv] occur | 185 |
|
| 2 | it [adv] occurred | 125 |
|
| 3 | it never occur | 87 |
|
| 4 | it never occur | 87 |
|
| 5 | it [adv] occurs | 47 |
|
| 6 | it suddenly occur | 19 |
|
| 7 | it suddenly occur | 19 |
|
| 8 | it also occur | 14 |
|
| 9 | it also occur | 14 |
|
| 10 | it just occur | 13 |
|
| 11 | it just occur | 13 |
|
| 12 | it [adv] occur | 12 |
|
| 13 | it ever occur | 12 |
|
| 14 | it ever occur | 12 |
|
| 15 | it often occur | 6 |
|
| 16 | it often occur | 6 |
|
| 17 | it [adv] occurred | 6 |
|
| 18 | it not occur | 5 |
|
| 19 | it [not/n't] occur | 5 |
|
| 20 | it not occur | 5 |
|
