D1212121221323132313232332313232233132322331311312112331311211311   >>    D121212122132313231323233231323223313232233131131211233131121131   <<    D1212121221323132313232332313232233132322331311312112331311211313   >>      D1212121221323132313232332313232233132322331311312112331311211312   >>