| Present "buckle" | I | buckle | |
| Present Continuous "buckle" | I | am buckling | |
| Simple past "buckle" | I | buckled | |
| Past Continuous "buckle" | I | was buckling | |
| Present perfect "buckle" | I | have buckled | |
| Present perfect continuous "buckle" | I | have been buckling | |
| Past perfect "buckle" | I | had buckled | |
| Past perfect continuous "buckle" | I | had been buckling | |
| Future "buckle" | I | will buckle | |
| Future continuous "buckle" | I | will be buckling | |
| Future perfect "buckle" | I | will have buckled | |
| Future perfect continuous "buckle" | I | will have been buckling |