"Source: Text/Incidence/Tableau.text";
"Line: 610";
"Date: Fri Sep 26 12:10:10 2025";
"Main: Fri Sep 26 14:29:19 2025";
// original file: Text/Incidence/Tableau.text, line: 610
// Example: H158E6 ()
print "Example: H158E6";
ei := GetEchoInput();
SetEchoInput(true);
O := OrderedIntegerMonoid();
P := PlacticIntegerMonoid();

w1 := O ! [2,7,4,8,1,5,9];
w1;
P!w1;
w2 := O ! [7,2,1,8,4,5,9];
w2;

IsKnuthEquivalent(w1,w2);
assert $1;
(P!w1) eq (P!w2);
assert $1;
w3 := O ! [7,1,5,8,2,9,4];
w3;

IsKnuthEquivalent(w1,w3);
assert not $1;
(P!w1) eq (P!w3);
assert not $1;
P!w3;
SetEchoInput(ei);
