| Present "solve" | I | solve | |
| Present Continuous "solve" | I | am solving | |
| Simple past "solve" | I | solved | |
| Past Continuous "solve" | I | was solving | |
| Present perfect "solve" | I | have solved | |
| Present perfect continuous "solve" | I | have been solving | |
| Past perfect "solve" | I | had solved | |
| Past perfect continuous "solve" | I | had been solving | |
| Future "solve" | I | will solve | |
| Future continuous "solve" | I | will be solving | |
| Future perfect "solve" | I | will have solved | |
| Future perfect continuous "solve" | I | will have been solving |