Bob and Bill took the ladder to the back of the bank. It was verry easy to carry, because it was not very heavy. There was nobody near the bank. They opened the ladder. Now push! said Bob. Bill pushed and the ladder got longer and longer. It went right up the wall of the bank. Push again said Bob. come on! I can't said Bill. It's not easy. Help me! All right, said Bob. They pushed togrther and the ladder went to the top of the wall. Now we can get on to the roof, said Bob. Then it will be easy to get inside the bank. It doesn't look safe to me, said Bill. I'm staying down here. OK, said Bob. You hold the ladder. He started to climb up. Bob put his feet and hands on the ladder, to hold it against the wall. The top of the ladder was thinner than the bottom.