难度: 中级 时间: 45-60分钟 主要食材: 水产类 菜系: 煲汤 湘味湘情农家菜，熏鱼薯粉两相宜，是很有特色的风味佳肴。
I want to find the first index of substrings in a larger string.I only want it to match whole words and I\'d like it to be case-insensitive, except that I want it to treat CamelCase as separate words.
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