...
cutadapt -g ^GTGYCAGCMGCCGCGGTAA -o R1out_no16s YOURFORWARDSEQUENCES -e 0.25
cutadapt -g ^CTTGGTCATTTAGAGGAAGTAA ^CTTGGTCATTTAGAGGAAGTAAT -o R1out_no16s_noits R1out_no16s -e 0.25
...
...
cutadapt -g ^GTGYCAGCMGCCGCGGTAA -o R1out_no16s YOURFORWARDSEQUENCES -e 0.25
cutadapt -g ^CTTGGTCATTTAGAGGAAGTAA ^CTTGGTCATTTAGAGGAAGTAAT -o R1out_no16s_noits R1out_no16s -e 0.25
...