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£,£,,,£,£, sloped. thus a railway is often not led ,,,,££,,,£
£££,,££££, on top of hills, rather through them in ,,,£,£,,£,
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£,,,£,££,, ££,,£,£,££
£,,£££,£,, there will be trees on the side of the ,£,£££££,,
£,£,,£££,£ rails, but not too close, or they will £££,,,,£,£
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,£,,£££,££ water. £,£,££,£,£
££,£,,££,, ££££,£££££
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£,££,£,£,, £££££££,££
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