#NEXUS BEGIN TAXA; Dimensions NTax=4; TaxLabels fisf frog snake mouse; END; BEGIN CHARACTERS; Dimensions NChar=20; Format DataType=DNA; Matrix fish ACATA GAGGG TACCT CTAAG frog ACATA GAGGG TACCT CTAAG snake ACATA GAGGG TACCT CTAAG mouse ACATA GAGGG TACCT CTAAG END; BEGIN TREES; Tree best=(fish, (frog, (snake, mouse))); END;