C1111233131211111211113313331333133313231323331323133313113323331333132212321   >>    C111123313121111121111331333133313331323132333132313331311332333133313221232   <<    C1111233131211111211113313331333133313231323331323133313113323331333132212323   >>      C1111233131211111211113313331333133313231323331323133313113323331333132212322   >>