I am a worker. I was a worker. I shall be a worker. We are workers. We were workers. We will be workers. You are a worker. You were a worker. You will be a worker. You are workers. You were workers. You will be workers. She is a worker. She was a worker. She will be a worker. He is a worker. He was a worker. He will be a worker It is a machine. It was a machine. It will be a machine. They are workers. They were workers. They will be workers.