C111123313121111121111331333133313231323132322331333132233132332212121   >>    C11112331312111112111133133313331323132313232233133313223313233221212   <<    C111123313121111121111331333133313231323132322331333132233132332212123   >>      C111123313121111121111331333133313231323132322331333132233132332212122   >>