C3132121111133313233121111331333133313331333133313331211113313232321   >>    C313212111113331323312111133133313331333133313331333121111331323232   <<    C3132121111133313233121111331333133313331333133313331211113313232323   >>      C3132121111133313233121111331333133313331333133313331211113313232322   >>