| Present "err" | I | err | |
| Present Continuous "err" | I | am erring | |
| Simple past "err" | I | erred | |
| Past Continuous "err" | I | was erring | |
| Present perfect "err" | I | have erred | |
| Present perfect continuous "err" | I | have been erring | |
| Past perfect "err" | I | had erred | |
| Past perfect continuous "err" | I | had been erring | |
| Future "err" | I | will err | |
| Future continuous "err" | I | will be erring | |
| Future perfect "err" | I | will have erred | |
| Future perfect continuous "err" | I | will have been erring |