sample	group	r1	r2
sample_01	G01	three_samples_example/sample-01-R1.fastq.gz	three_samples_example/sample-01-R2.fastq.gz
sample_02	G02	three_samples_example/sample-02-R1.fastq.gz	three_samples_example/sample-02-R2.fastq.gz
sample_03	G02	three_samples_example/sample-03-R1.fastq.gz	three_samples_example/sample-03-R2.fastq.gz
