C11111211113313112113313331333133313133313232233133313113313232333133313113321   >>    C1111121111331311211331333133313331313331323223313331311331323233313331311332   <<    C11111211113313112113313331333133313133313232233133313113313232333133313113323   >>      C11111211113313112113313331333133313133313232233133313113313232333133313113322   >>