3D grouped mat lab bar graph

Hi I have two grouped bar graphs. The first one is for x=1 and the second one is for x=2. I want to combine both at the same with a 3D view. My code is here

clear all
clc
close all
%at x=1
a=[11;7;14;11;43;38];
b=[11;13;17;13;51;46];
c=[9;11;20;9;69;76];
y1=[a b c];
%at x=2
d=[38;61;75;38;28;33];
e=[46;132;135;88;36;51];
f=[76;186;180;115;85;72];
y2=[d e f];
figure(1)
bar3(y1,'grouped')
title('Grouped Style')
ylabel('y1')
zlabel('z1')
figure(2)
bar3(y2,'grouped')
title('Grouped Style')
ylabel('y2')
zlabel('z2')

I want to group the second set of data in x direction. I group y1 and y2 at the same x - axis. I want y1 grouped at x=1 and y2 at x=2. Like in the figure below but grouped at x=1 and x=2.Please help!

Any help is appreciated!

Thank you