D1212121221323132313232332313232233131133131323223313231323111111   >>    D121212122132313231323233231323223313113313132322331323132311111   <<    D1212121221323132313232332313232233131133131323223313231323111113   >>      D1212121221323132313232332313232233131133131323223313231323111112   >>