C11111211113313112113313331333133313231311331333121211113313221333122331   >>    C1111121111331311211331333133313331323131133133312121111331322133312233   <<    C11111211113313112113313331333133313231311331333121211113313221333122333   >>      C11111211113313112113313331333133313231311331333121211113313221333122332   >>