I want to analyze data by general linear modeling in Statistica software. The design of the experiment was unbalanced incomplete factorial design, however it is difficult to write the syntax equations for the design. I would like to see your suggestions and comments. The experiment has three factors: Factor 1 with three levels, Factor 2 with two levels and Factor 3 with three levels. The numbers of treatments are only 13 as some of the combinations are redundant or practically cannot exist. Thus the five combination treatments are omitted.