C312312111111331312111133133313331333133322331333133313311223311111   >>    C31231211111133131211113313331333133313332233133313331331122331111   <<    C312312111111331312111133133313331333133322331333133313311223311113   >>      C312312111111331312111133133313331333133322331333133313311223311112   >>