#macro c(h,i,p)#if(i<6)c(int(h/2)i+1p)#if(mod(h,2))_(1)_(-1)#end#end#end//chip background{1}#macro _(s)box{-.5,.5translate}#end sphere{<1,3,19> .5}sphere{<-1,-3,19>.5}c(7,0,-6)c(5,0,-5)c(1,0,-4)c(31,0,-3)c(4,0,-2)c(7,0,-1)