ws2s;

guide d0->(a,b), a->(a,a), b->(b,b);
universe ua:0, ub:1;

var2 [ua] A;
var2 [ub] B;

ex1 [ua] p1,p2,p3,p4,p5: 
  p1<p2 & p2<p3 & p3<p4 & p4<p5 &
  A = {p1,p2,p3,p4,p5};

ex1 [ub] p1,p2,p3,p4,p5,p6,p7: 
  p1<p2 & p2<p3 & p3<p4 & p4<p5 & p5<p6 & p6<p7 &
  B = {p1,p2,p3,p4,p5,p6,p7};