TITLE:        categorical DFM

DATA:         FILE = data.txt;

VARIABLE:     NAMES = y1-y4; 
              USEVARIABLES = y1-y4

ANALYSIS: 
  BOOTSTRAP = 1000;
					  
MODEL:         
  i s | y1@0 y2@1 y3@2 y4@3;
  y1-y4 (a);