| singular | plural |
Infinitive | | |
| occur | |
present simple | | |
1 | I occur | we occur |
2 | you occur | you occur |
3 | he/she/it occurs | they occur |
past simple | | |
1 | I occurred | we occurred |
2 | you occurred | you occurred |
3 | he/she/it occurred | they occurred |
future simple | | |
1 | I will/shall occur | we will/shall occur |
2 | you will/shall occur | you will/shall occur |
3 | he/she/it will/shall occur | they will/shall occur |
conditional simple | | |
1 | I would occur | we would occur |
2 | you would occur | you would occur |
3 | he/she/it would occur | they would occur |
present continuous | | |
1 | I am occurring | we are occurring |
2 | you are occurring | you are occurring |
3 | he/she/it is occurring | they are occurring |
past continuous | | |
1 | I was occurring | we were occurring |
2 | you were occurring | you were occurring |
3 | he/she/it was occurring | they were occurring |
future continuous | | |
1 | I will be occurring | we will be occurring |
2 | you will be occurring | you will be occurring |
3 | he/she/it will be occurring | they will be occurring |
conditional continuous | | |
1 | I would be occurring | we would be occurring |
2 | you would be occurring | you would be occurring |
3 | he/she/it would be occurring | they would be occurring |
present perfect | | |
1 | I have occurred | we have occurred |
2 | you have occurred | you have occurred |
3 | he/she/it has occurred | they have occurred |
past perfect | | |
1 | I had occurred | we had occurred |
2 | you had occurred | you had occurred |
3 | he/she/it had occurred | they had occurred |
future perfect | | |
1 | I will have occurred | we will have occurred |
2 | you will have occurred | you will have occurred |
3 | he/she/it will have occurred | they will have occurred |
conditional perfect | | |
1 | I would have occurred | we would have occurred |
2 | you would have occurred | you would have occurred |
3 | he/she/it would have occurred | they would have occurred |