Select Owner by Initial Characters

GUO,   GUO,B  GUO,D  GUO,F  GUO,G  GUO,H  GUO,J  GUO,K  GUO,L  GUO,M  GUO,P  GUO,Q  GUO,R  GUO,S  GUO,T  GUO,W  GUO,X  GUO,Y  GUO,Z  GUO,