The first step is to build the ?, heats, paint, frame, avoid, Workers work carefully to ? an accident., avoid, paint, frame, heats, A worker ? the edges of each steel sheet to join them together., avoid, frame, paint, heats, Workers ? two kinds of metal., leak, paint, hoist, melt, Steel gets ? when it cools., dock, hard, toward, soft, A ship might ? if a joints leaks., sink, melt, Finally, workers ? the ship., molds, paint.

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