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@benwaffle
Last active February 1, 2018 03:35
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warmup: car
backtrack: d a(?! o).*re
articles and vowels: ou|j|wi
dates: ^..[^nr]
binary: ,010.*1$
contains: ta|[ae]t
binary expansion: ^1|\(1\)(?!\+0)
prime: ^(?!(xx+)\1+$)
capitals: me|[xJRf]|er
cats and dogs: [FBNV]|er|ya|io
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