C3132121111133313233121111331333133313331333121211113313332222331333232321   >>    C313212111113331323312111133133313331333133312121111331333222233133323232   <<    C3132121111133313233121111331333133313331333121211113313332222331333232323   >>      C3132121111133313233121111331333133313331333121211113313332222331333232322   >>