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路線1:
主線....車站......支線單線區域...車站................車站...............車站..................車站...........總站(需停車等客)
_____[_____]┓................................ __┏[_____]________[_____]__________[_____]______[_____]
__X__[_____]______________[_____]_________[_____]┛.............................................┗ [_____]
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