| Present "blunder" | I | blunder | |
| Present Continuous "blunder" | I | am blundering | |
| Simple past "blunder" | I | blundered | |
| Past Continuous "blunder" | I | was blundering | |
| Present perfect "blunder" | I | have blundered | |
| Present perfect continuous "blunder" | I | have been blundering | |
| Past perfect "blunder" | I | had blundered | |
| Past perfect continuous "blunder" | I | had been blundering | |
| Future "blunder" | I | will blunder | |
| Future continuous "blunder" | I | will be blundering | |
| Future perfect "blunder" | I | will have blundered | |
| Future perfect continuous "blunder" | I | will have been blundering |