x1=0.01     
    x2=0.02                               
    x3=0.07               
    
    y1=0.01
    y2=0.06
    y3=0.07
    
    z1=0.07
    z2=0.06
    z3=0.01
    
    /prep7
    *do,x,1,3,1
        *do,z,1,3,1                     
            k,%x%1%z%,x%x%,y%1%,z%z%
            *do,y,2,3,1  
                 k,%x%%y%%z%,x%x%,y%y%,z%z%                     
            *enddo                                
        *enddo 
    *enddo  
                       
                            !***** Variante 1 *****!
                          *do,x,1,2,1                          
                              *do,z,1,2,1 
                                  v,%x%2%z%,%x+1%2%z%,%x+1%3%z%,%x%3%z%,%x%2%z+1%,%x+1%2%z+1%,%x+1%3%z+1%,%x%3%z+1%  
                                  v,%x%1%z%,%x+1%1%z%,%x+1%2%z%,%x%2%z%,%x%1%z+1%,%x+1%1%z+1%,%x+1%2%z+1%,%x%2%z+1%  
                              *enddo        
                          *enddo 
                        
                           !***** Variante 2 *****!        
                      !     *do,x,1,2,1                          
                      !         *do,z,1,2,1
                      !             *do,y,1,2,1        
                      !                 v,%x%%y%%z%,%x+1%%y%%z%,%x+1%%y+1%%z%,%x%%y+1%%z%,%x%%y%%z+1%,%x+1%%y%%z+1%,%x+1%%y+1%%z+1%,%x%%y+1%%z+1%  
                      !             *enddo        
                      !         *enddo  
                      !     *enddo 
                  
    vsel,s,loc,y,y2,y3
    vsel,r,loc,x,x1,x2
    vdele,all,,,1
    
    vsel,s,loc,z,z1,z2
    vsel,r,loc,x,x1,x2
    vdele,all,,,1
    
    block,-0.1,0.1,-0.1,0.1,-0.1,0.1  
    numcmp,volu
    vsel,all
    vovlap,all