ws2s; var2 A,B; ex1 p1,p2,p3,p4,p5: p1<p2 & p2<p3 & p3<p4 & p4<p5 & A = {p1,p2,p3,p4,p5}; ex1 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};
ws2s; var2 A,B; ex1 p1,p2,p3,p4,p5: p1<p2 & p2<p3 & p3<p4 & p4<p5 & A = {p1,p2,p3,p4,p5}; ex1 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};