C312312111133131212111133133313331323133313233121111113313331322331322121   >>    C31231211113313121211113313331333132313331323312111111331333132233132212   <<    C312312111133131212111133133313331323133313233121111113313331322331322123   >>      C312312111133131212111133133313331323133313233121111113313331322331322122   >>