oa seeds oa list forward fastq file reverse fastq file Fasta contig file GML path graph Fasta stem file Generating sequences Folder 1 oa unfold oa unfoldrdna oa fasta oa path Preparing data Folder 2 oa index oa compact Sequence_Index.oax Assembling_graph.oas Build assembling Folder 3 oa buildgraph oa cutlow oa clone Assembling_graph_copy.oas oa graph graph file