fix errors in operator

libmwereader/test_mwe.xml

@@ -26,9 +26,9 @@
 	<mwegroup name="AdjSubstFix" type="fix" class="subst">
 		<condition>
 			and(
-				inter(base[0],{$Adj}),
+				inter(base[0],$s:Adj),
 				inter(class[0],{adj}),
-				inter(base[1],$Subst),
+				inter(base[1],$s:Subst),
 				inter(class[1],{subst,ger,depr}),
 				agrpp(0,1,{nmb,gnd,cas})
 			)