C11111211113313112113313331333133313231311331333133311223132322233231   >>    C1111121111331311211331333133313331323131133133313331122313232223323   <<    C11111211113313112113313331333133313231311331333133311223132322233233   >>      C11111211113313112113313331333133313231311331333133311223132322233232   >>