C312312111111331312111133133313331322331333133313121111332223133313221   >>    C31231211111133131211113313331333132233133313331312111133222313331322   <<    C312312111111331312111133133313331322331333133313121111332223133313223   >>      C312312111111331312111133133313331322331333133313121111332223133313222   >>