Multiple density function with changing parameters plot in same graph

I want to plot multiple density curves in a single graph like the attached one. In this graph I want variable values (fixed) in one axis say X, normal pdf values in Z and how many parameter set is being used in Y axis... Can anybody please help me regarding this??? Thanks in advance...

Data set can be like this:

X = -3:0.01:3; X = X';

pd1 = normpdf(X, 0, 1);

pd2 = normpdf(X, 1, 1);

pd3 = normpdf(X, 2, 1);

pd4 = normpdf(X, 3, 1);

In X axis it will contain X values. In Z axis it will show pd values and in Y axis it will show 1, 2, 3, 4.