D1212121221323132313232332313232233132333132322121111132313232221   >>    D121212122132313231323233231323223313233313232212111113231323222   <<    D1212121221323132313232332313232233132333132322121111132313232223   >>      D1212121221323132313232332313232233132333132322121111132313232222   >>