C11111211113313112113313331333133313231311331333113313232213233231   >>    C1111121111331311211331333133313331323131133133311331323221323323   <<    C11111211113313112113313331333133313231311331333113313232213233233   >>      C11111211113313112113313331333133313231311331333113313232213233232   >>