C312312111111331312111133133313331322331333133313113313222211111   >>    C31231211111133131211113313331333132233133313331311331322221111   <<    C312312111111331312111133133313331322331333133313113313222211113   >>      C312312111111331312111133133313331322331333133313113313222211112   >>