#NEXUS
[simple_taxa_and_chars.nex]
BEGIN TAXA;
dimensions ntax=4;
taxlabels A B C D;
END;
BEGIN CHARACTERS;
dimensions nchar=6;
format
datatype=protein missing=? gap=- ;
matrix
A -MQG-?
B ---G--
C -MGG--
D -MGTGQ
;
END;