Sample_ID	Group
aa1	TreatA
aa2	TreatA
aa3	TreatA
aa4	TreatA
aa5	TreatA
aa6	TreatA
ab1	TreatB
ab2	TreatB
ab3	TreatB
ab4	TreatB
ab5	TreatB
ab6	TreatB