C111123313331323113313331333133313331323323221333132313231322121   >>    C11112331333132311331333133313331333132332322133313231323132212   <<    C111123313331323113313331333133313331323323221333132313231322123   >>      C111123313331323113313331333133313331323323221333132313231322122   >>