| sg1st | sg2nd | sg3rd | pl1st | pl2nd | pl3rd | |
|---|---|---|---|---|---|---|
| Simple present | collapse | collapse | collapses | collapse | collapse | collapse |
| Present continuous | am collapsing | are collapsing | is collapsing | are collapsing | are collapsing | are collapsing |
| Simple past | collapsed | collapsed | collapsed | collapsed | collapsed | collapsed |
| Past continuous | was collapsing | were collapsing | was collapsing | were collapsing | were collapsing | were collapsing |
| Simple future | will collapse | will collapse | will collapse | will collapse | will collapse | will collapse |
| Future continuous | will be collapsing | will be collapsing | will be collapsing | will be collapsing | will be collapsing | will be collapsing |
| Present perfect | have collapsed | have collapsed | has collapsed | have collapsed | have collapsed | have collapsed |
| Present perfect continuous | have been collapsing | have been collapsing | has been collapsing | have been collapsing | have been collapsing | have been collapsing |
| Present continuous | am collapsing | are collapsing | is collapsing | are collapsing | are collapsing | are collapsing |
| Past perfect | had collapsed | had collapsed | had collapsed | had collapsed | had collapsed | had collapsed |
| Past perfect continuous | had been collapsing | had been collapsing | had been collapsing | had been collapsing | had been collapsing | had been collapsing |
| Future perfect | will have collapsed | will have collapsed | will have collapsed | will have collapsed | will have collapsed | will have collapsed |
| Future perfect continuous | will have been collapsing | will have been collapsing | will have been collapsing | will have been collapsing | will have been collapsing | will have been collapsing |
| sg1st | sg2nd | sg3rd | pl1st | pl2nd | pl3rd | |
|---|---|---|---|---|---|---|
| Simple present | don't collapse | don't collapse | doesn't collapse | don't collapse | don't collapse | don't collapse |
| Present continuous | am not collapsing | are not collapsing | is not collapsing | are not collapsing | are not collapsing | are not collapsing |
| Simple past | didn't collapse | didn't collapse | didn't collapse | didn't collapse | didn't collapse | didn't collapse |
| Past continuous | was not collapsing | were not collapsing | was not collapsing | were not collapsing | were not collapsing | were not collapsing |
| Simple future | won't collapse | won't collapse | won't collapse | won't collapse | won't collapse | won't collapse |
| Future continuous | will not be collapsing | will not be collapsing | will not be collapsing | will not be collapsing | will not be collapsing | will not be collapsing |
| Present perfect | have not collapsed | have not collapsed | has not collapsed | have not collapsed | have not collapsed | have not collapsed |
| Present perfect continuous | have not been collapsing | have not been collapsing | has not been collapsing | have not been collapsing | have not been collapsing | have not been collapsing |
| Present continuous | am not collapsing | are not collapsing | is not collapsing | are not collapsing | are not collapsing | are not collapsing |
| Past perfect | had not collapsed | had not collapsed | had not collapsed | had not collapsed | had not collapsed | had not collapsed |
| Past perfect continuous | had not been collapsing | had not been collapsing | had not been collapsing | had not been collapsing | had not been collapsing | had not been collapsing |
| Future perfect | will have not collapsed | will have not collapsed | will have not collapsed | will have not collapsed | will have not collapsed | will have not collapsed |
| Future perfect continuous | will have not been collapsing | will have not been collapsing | will have not been collapsing | will have not been collapsing | will have not been collapsing | will have not been collapsing |