| sg1st | sg2nd | sg3rd | pl1st | pl2nd | pl3rd | |
|---|---|---|---|---|---|---|
| Simple present | open up | open up | opens up | open up | open up | open up |
| Present continuous | am opening up | are opening up | is opening up | are opening up | are opening up | are opening up |
| Simple past | opened up | opened up | opened up | opened up | opened up | opened up |
| Past continuous | was opening up | were opening up | was opening up | were opening up | were opening up | were opening up |
| Simple future | will open up | will open up | will open up | will open up | will open up | will open up |
| Future continuous | will be opening up | will be opening up | will be opening up | will be opening up | will be opening up | will be opening up |
| Present perfect | have opened up | have opened up | has opened up | have opened up | have opened up | have opened up |
| Present perfect continuous | have been opening up | have been opening up | has been opening up | have been opening up | have been opening up | have been opening up |
| Present continuous | am opening up | are opening up | is opening up | are opening up | are opening up | are opening up |
| Past perfect | had opened up | had opened up | had opened up | had opened up | had opened up | had opened up |
| Past perfect continuous | had been opening up | had been opening up | had been opening up | had been opening up | had been opening up | had been opening up |
| Future perfect | will have opened up | will have opened up | will have opened up | will have opened up | will have opened up | will have opened up |
| Future perfect continuous | will have been opening up | will have been opening up | will have been opening up | will have been opening up | will have been opening up | will have been opening up |
| sg1st | sg2nd | sg3rd | pl1st | pl2nd | pl3rd | |
|---|---|---|---|---|---|---|
| Simple present | don't open up | don't open up | doesn't open up | don't open up | don't open up | don't open up |
| Present continuous | am not opening up | are not opening up | is not opening up | are not opening up | are not opening up | are not opening up |
| Simple past | didn't open up | didn't open up | didn't open up | didn't open up | didn't open up | didn't open up |
| Past continuous | was not opening up | were not opening up | was not opening up | were not opening up | were not opening up | were not opening up |
| Simple future | won't open up | won't open up | won't open up | won't open up | won't open up | won't open up |
| Future continuous | will not be opening up | will not be opening up | will not be opening up | will not be opening up | will not be opening up | will not be opening up |
| Present perfect | have not opened up | have not opened up | has not opened up | have not opened up | have not opened up | have not opened up |
| Present perfect continuous | have not been opening up | have not been opening up | has not been opening up | have not been opening up | have not been opening up | have not been opening up |
| Present continuous | am not opening up | are not opening up | is not opening up | are not opening up | are not opening up | are not opening up |
| Past perfect | had not opened up | had not opened up | had not opened up | had not opened up | had not opened up | had not opened up |
| Past perfect continuous | had not been opening up | had not been opening up | had not been opening up | had not been opening up | had not been opening up | had not been opening up |
| Future perfect | will have not opened up | will have not opened up | will have not opened up | will have not opened up | will have not opened up | will have not opened up |
| Future perfect continuous | will have not been opening up | will have not been opening up | will have not been opening up | will have not been opening up | will have not been opening up | will have not been opening up |