D21221323131123313131333132233131133131323223313232212121111123321   >>    D2122132313112331313133313223313113313132322331323221212111112332   <<    D21221323131123313131333132233131133131323223313232212121111123323   >>      D21221323131123313131333132233131133131323223313232212121111123322   >>