D1212111111222331322331313223313221323132313231313113313232313233311   >>    D121211111122233132233131322331322132313231323131311331323231323331   <<    D1212111111222331322331313223313221323132313231313113313232313233313   >>      D1212111111222331322331313223313221323132313231313113313232313233312   >>