D12121212213231323132323323132322331323223313113121123313231311211   >>    D1212121221323132313232332313232233132322331311312112331323131121   <<    D12121212213231323132323323132322331323223313113121123313231311213   >>      D12121212213231323132323323132322331323223313113121123313231311212   >>