C31232233133313221211113313331333132313331333133313331333133313232233132333231   >>    C3123223313331322121111331333133313231333133313331333133313331323223313233323   <<    C31232233133313221211113313331333132313331333133313331333133313232233132333233   >>      C31232233133313221211113313331333132313331333133313331333133313232233132333232   >>