D12121212213231323132333131313231323331333133311331323223322321   >>    D1212121221323132313233313131323132333133313331133132322332232   <<    D12121212213231323132333131313231323331333133311331323223322323   >>      D12121212213231323132333131313231323331333133311331323223322322   >>