C3132121111133313233121111331333133313331333133313331333133313232132322121   >>    C313212111113331323312111133133313331333133313331333133313331323213232212   <<    C3132121111133313233121111331333133313331333133313331333133313232132322123   >>      C3132121111133313233121111331333133313331333133313331333133313232132322122   >>