My barcode file is as follows:
NN,ATCGT:01_Fast_WT_1
NN,AGCTA:02_Fast_WT_2
NN,CGTAA:03_Fast_Mut_1
NN,CTAGA:04_Fast_Mut_2
However, I am encountering an error relating to the lack of non N characters in my 5' barcodes. My reads do not have barcodes on the 5' end, rather an NN UMI. What parameters could I use to demultiplex the above?