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-22_S62_L001_R1_001.fastq.gz /nephele_data/inputs/E23-ITS-22_S62_L001_R1_001.fastq Processing single-end reads on 16 cores ... Finished in 0.42 s (12 µs/read; 5.09 M reads/minute). === Summary === Total reads processed: 35,779 Reads with adapters: 396 (1.1%) Reads written (passing filters): 35,779 (100.0%) Total basepairs processed: 10,733,700 bp Total written (filtered): 10,731,730 bp (100.0%) === Adapter 1 === Sequence: AACTTTYARCAAYGGATCTCCTGTCTCTTATACACATCTCCGAGCCCACGAGAC; Type: regular 3'; Length: 54; Trimmed: 14 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: 21.4% C: 35.7% G: 14.3% T: 28.6% none/other: 0.0% Overview of removed sequences length count expect max.err error counts 3 10 559.0 0 10 4 4 139.8 0 4 === Adapter 2 === Sequence: ACCTGCGGARGGATCA; Type: regular 5'; Length: 16; Trimmed: 382 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 3 203 559.0 0 203 4 129 139.8 0 129 15 1 0.0 1 1 16 49 0.0 1 11 38