[I play chess] these sentence is convert into 12 tences.
- I play chess. [simple present tense]
- I am playing chess. [present continuous tense]
- I have played chess. [present perfect tense]
- I have been playing chess. [present perfect continuous tense]
- I played chess. [simple past tense]
- I was playing chess. [past continuous tense]
- I had played chess. [past perfect tense]
- I had been playing chess. [past perfect continuous tense]
- I shall play chess. [simple future tense]
- I shall be playing chess. [future continuous tense]
- I shall have played chess. [future perfect tense]
- I shall have been playing chess. [future perfect continuous tense]