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