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Contigs.fa will have all the contigs that were assembled. The contig header will have information such as length and coverage for that contig.
Note that the length and coverage information provided in the header of each contig should be understood in k-mers and in k-mer coverage respectively. E.g. for a 500bp contig and a k-mer length of 21, the length in the header will be 480.
To pull out the top 50 largest contig headers:
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