C1111233131211111211113313331323133313231323223313331323331123223331   >>    C111123313121111121111331333132313331323132322331333132333112322333   <<    C1111233131211111211113313331323133313231323223313331323331123223333   >>      C1111233131211111211113313331323133313231323223313331323331123223332   >>