D1212121221323132313233313131323133313231313331322331323132223321   >>    D121212122132313231323331313132313331323131333132233132313222332   <<    D1212121221323132313233313131323133313231313331322331323132223323   >>      D1212121221323132313233313131323133313231313331322331323132223322   >>