| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] occasion when it [vb -s] | 6 |
|
| 2 | be occasion when it [vb -s] | 6 |
|
| 3 | [am/are] occasion when it [vb -s] | 5 |
|
| 4 | are occasion when it [vb -s] | 5 |
|
