C11111211113313112113313331333133313231311331333133312111133223322331   >>    C1111121111331311211331333133313331323131133133313331211113322332233   <<    C11111211113313112113313331333133313231311331333133312111133223322333   >>      C11111211113313112113313331333133313231311331333133312111133223322332   >>