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-37_S77_L001_R1_001.fastq.gz /nephele_data/inputs/E23-ITS-37_S77_L001_R1_001.fastq Processing single-end reads on 16 cores ... Finished in 0.48 s (12 µs/read; 4.93 M reads/minute). === Summary === Total reads processed: 39,842 Reads with adapters: 128 (0.3%) Reads written (passing filters): 39,842 (100.0%) Total basepairs processed: 11,952,600 bp Total written (filtered): 11,952,152 bp (100.0%) === Adapter 1 === Sequence: AACTTTYARCAAYGGATCTCCTGTCTCTTATACACATCTCCGAGCCCACGAGAC; Type: regular 3'; Length: 54; Trimmed: 16 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: 18.8% C: 37.5% G: 18.8% T: 25.0% none/other: 0.0% Overview of removed sequences length count expect max.err error counts 3 8 622.5 0 8 4 8 155.6 0 8 === Adapter 2 === Sequence: ACCTGCGGARGGATCA; Type: regular 5'; Length: 16; Trimmed: 112 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 56 622.5 0 56 4 56 155.6 0 56