fing barcode from a DNA Sequence

I have a fastq file from that I have to seperate barcode(highlighted with green color) which is sandwiched between V1 and V2. Please suggest which method I can use to obtain this

[KSSV]

You have v1 and v2 in hand? Are they known?

[anooja thomas]

yes the are known

[Rena Berman]

(Answers dev) restored edit

Answer 1

[Vismay Raj]

Maybe what you are looking for can be achieved through substrings this link can be helpfull

[anooja thomas]

thank you let me try this