junction_forward	rigs1_forward	rigs2_forward	count
GTCTCACAGTGTCTCTCGACCCTCCCACCTCCTCCTGTCCCCATAATTTTTGGCAGAGGGAAAA	NA	NA	1
NA	NA	NA	892379
TTTTCCCTCTGCCAAAAATTATGGGGACATCATGAAGCCCCTTGAGC	NA	NA	1