barcodes:
  bc1: "data/barcodes_v3/fb_v3_bc1.tsv"
  bc2: "data/barcodes_v3/fb_v3_bc2.tsv"
  bc3: "data/barcodes_v3/fb_v3_bc3.tsv"
  bc4: "data/barcodes_v3/fb_v3_bc4.tsv"
spacers:
  s1: "ATG"
  s2: "GAG"
  s3: "TCGAG"