| Present "add" | I | add | |
| Present Continuous "add" | I | am adding | |
| Simple past "add" | I | added | |
| Past Continuous "add" | I | was adding | |
| Present perfect "add" | I | have added | |
| Present perfect continuous "add" | I | have been adding | |
| Past perfect "add" | I | had added | |
| Past perfect continuous "add" | I | had been adding | |
| Future "add" | I | will add | |
| Future continuous "add" | I | will be adding | |
| Future perfect "add" | I | will have added | |
| Future perfect continuous "add" | I | will have been adding |