D33131112113313231333133313331333132313231333132313221123313331323221212121   >>    D3313111211331323133313331333133313231323133313231322112331333132322121212   <<    D33131112113313231333133313331333132313231333132313221123313331323221212123   >>      D33131112113313231333133313331333132313231333132313221123313331323221212122   >>