This is cutadapt 4.1 with Python 3.8.13 Command line parameters: --cores 16 --match-read-wildcards --overlap 3 --error-rate 0.1 -a AACTTTYARCAAYGGATCTCCTGTCTCTTATACACATCTCCGAGCCCACGAGAC -g ACCTGCGGARGGATCA -o /nephele_data/outputs/cutadapt_trimmed/E23-ITS-31_S71_L001_R1_001.fastq.gz /nephele_data/inputs/E23-ITS-31_S71_L001_R1_001.fastq Processing single-end reads on 16 cores ... Finished in 0.27 s (13 µs/read; 4.73 M reads/minute). === Summary === Total reads processed: 21,571 Reads with adapters: 78 (0.4%) Reads written (passing filters): 21,571 (100.0%) Total basepairs processed: 6,471,300 bp Total written (filtered): 6,470,723 bp (100.0%) === Adapter 1 === Sequence: AACTTTYARCAAYGGATCTCCTGTCTCTTATACACATCTCCGAGCCCACGAGAC; Type: regular 3'; Length: 54; Trimmed: 4 times Minimum overlap: 3 No. of allowed errors: 1-9 bp: 0; 10-19 bp: 1; 20-29 bp: 2; 30-39 bp: 3; 40-49 bp: 4; 50-54 bp: 5 Bases preceding removed adapters: A: 25.0% C: 25.0% G: 0.0% T: 50.0% none/other: 0.0% Overview of removed sequences length count expect max.err error counts 3 1 337.0 0 1 4 2 84.3 0 2 5 1 21.1 0 1 === Adapter 2 === Sequence: ACCTGCGGARGGATCA; Type: regular 5'; Length: 16; Trimmed: 74 times Minimum overlap: 3 No. of allowed errors: 1-9 bp: 0; 10-16 bp: 1 Overview of removed sequences length count expect max.err error counts 3 47 337.0 0 47 4 1 84.3 0 1 16 26 0.0 1 7 19