C312312111111331312111133133313331322331333133313121111331333112313221   >>    C31231211111133131211113313331333132233133313331312111133133311231322   <<    C312312111111331312111133133313331322331333133313121111331333112313223   >>      C312312111111331312111133133313331322331333133313121111331333112313222   >>