# [#] indicates sample barcode and length.  Only a single occurance is handled
# {#} indicates building block barcode and length.  Can contain multiple
# (#) indicates random barcode and length.  Only a single occurance is handled
# AGC, or T for constant regions.  Can contain Ns for any nucleotide, but this is less tested
# below is for a sample barcode of 10 nucleotides followed by a constant region, then 6 nucletide building block barcode, constant etc.
[10]
AGCTACGAATCG
{6}
TGGA
{6}
TGGA
{6}
ACTAGAT
(8)
TAGA