var a array;

a[1] := "hello";
a[4] := "world";

print( a[1] );
print( a[4] );

a[4] := "hey";
print( a[1] );
print( a[4] );

var b;

b := a;

print( "b created, initialized" );
print( a[1] );
print( a[4] );
print( b[1] );
print( b[4] );

a[1] := "changed a";

print( "a modified" );
print( a[1] );
print( a[4] );
print( b[1] );
print( b[4] );