It is well known how to find the Alias Structure for Reduced Design with n Factors at 2 levels 2^(n-k).

• Is there any method to find the Alias Structure for Reduced Design with n Factors at 3 levels 3^(n-k)

For example WHAT is the Alias Structure for Reduced Design with 5 Factors at 3 levels 3^(5-2)

as in the following L27 experimental design matrix.... See the file

Thanks

M. Sivo