- Present Perfect : S + have , has + been + V3 + by….
- Past Perfect : S + had+ been + V3 + by….
- Future Perfect : S + will+ have +been + V3 + by ….
- Present Simple : Is , Am , Are + s + V3 +by ….
- Present Perfect : Have , Has +s + been + V3 + by ….
- Past Perfect : Had+ s + been + V3 + by….
- Future Perfect : Will+ s + have +been + V3 + by ….
- Present Perfect : S + have , has + not + been + V3 + by….
- Past Perfect : S + had+ not + been + V3 + by….
- Future Perfect : S + will+ not + have +been + V3 + by ….
A letter is written by jame.