| Present "circulate" | I | circulate | |
| Present Continuous "circulate" | I | am circulating | |
| Simple past "circulate" | I | circulated | |
| Past Continuous "circulate" | I | was circulating | |
| Present perfect "circulate" | I | have circulated | |
| Present perfect continuous "circulate" | I | have been circulating | |
| Past perfect "circulate" | I | had circulated | |
| Past perfect continuous "circulate" | I | had been circulating | |
| Future "circulate" | I | will circulate | |
| Future continuous "circulate" | I | will be circulating | |
| Future perfect "circulate" | I | will have circulated | |
| Future perfect continuous "circulate" | I | will have been circulating |