D1212121221323132313232332313232233132313232213331323331313233313231231   >>    D121212122132313231323233231323223313231323221333132333131323331323123   <<    D1212121221323132313232332313232233132313232213331323331313233313231233   >>      D1212121221323132313232332313232233132313232213331323331313233313231232   >>