| Present "assemble" | I | assemble | |
| Present Continuous "assemble" | I | am assembling | |
| Simple past "assemble" | I | assembled | |
| Past Continuous "assemble" | I | was assembling | |
| Present perfect "assemble" | I | have assembled | |
| Present perfect continuous "assemble" | I | have been assembling | |
| Past perfect "assemble" | I | had assembled | |
| Past perfect continuous "assemble" | I | had been assembling | |
| Future "assemble" | I | will assemble | |
| Future continuous "assemble" | I | will be assembling | |
| Future perfect "assemble" | I | will have assembled | |
| Future perfect continuous "assemble" | I | will have been assembling |