position = 1
is_unique = True
for line in target:
if position == 1:
header = line.rstrip('\n')
position += 1
elif position == 2:
umi_seq = line[0:6]+line[-6:]
umi_seq = umi_seq.rstrip('\n')
read_seq = line[6:-6]
position += 1
elif position == 3:
position += 1
elif position == 4:
quality = line.rstrip('\n')
position = 1