C312312111111331312111133133313331322331333133313121111331323231311   >>    C31231211111133131211113313331333132233133313331312111133132323131   <<    C312312111111331312111133133313331322331333133313121111331323231313   >>      C312312111111331312111133133313331322331333133313121111331323231312   >>