Sheep with two legs is easy? Depend on which two legs...

Sabine, there is a wonderfull art book called Griffin And Sabine. They are artists. He is in London and she lives on a small island in the South Pacific but when she closes her eyes and relaxes she can see in her mind's ey the drawings and paintings as he works on them. The story is told entirely through their letters and postcards exactly as they are written. That means you may see the picture side of a postcard on a page. On the back of that page is the other side of the postcard with the message. If the correspondence is a letter then the front of the page is the front of the envelope. The back of the page is the actual envelope with the letter inside. You have to remove the letter and unfold it to read it.