C312312111111331312111133133313121111133313113313331322331322123313331121311   >>    C31231211111133131211113313331312111113331311331333132233132212331333112131   <<    C312312111111331312111133133313121111133313113313331322331322123313331121313   >>      C312312111111331312111133133313121111133313113313331322331322123313331121312   >>