C111123313331323113313331333133313231323133312111133131132323221   >>    C11112331333132311331333133313331323132313331211113313113232322   <<    C111123313331323113313331333133313231323133312111133131132323223   >>      C111123313331323113313331333133313231323133312111133131132323222   >>