C3132121111133313233121111331333133313331333133313331333133313331333232132121   >>    C313212111113331323312111133133313331333133313331333133313331333133323213212   <<    C3132121111133313233121111331333133313331333133313331333133313331333232132123   >>      C3132121111133313233121111331333133313331333133313331333133313331333232132122   >>