D21221323131123313131333132233131133131323223313232212121111331311331   >>    D2122132313112331313133313223313113313132322331323221212111133131133   <<    D21221323131123313131333132233131133131323223313232212121111331311333   >>      D21221323131123313131333132233131133131323223313232212121111331311332   >>