C312312111111331312111133133313331322331333133313121111331323133311212331   >>    C31231211111133131211113313331333132233133313331312111133132313331121233   <<    C312312111111331312111133133313331322331333133313121111331323133311212333   >>      C312312111111331312111133133313331322331333133313121111331323133311212332   >>