C11111211113313112113313331333133313133313232233133313111113111   >>    C1111121111331311211331333133313331313331323223313331311111311   <<    C11111211113313112113313331333133313133313232233133313111113113   >>      C11111211113313112113313331333133313133313232233133313111113112   >>