Make the population explicitly ordered.

words.py

@@ -46,19 +46,18 @@ while True:
         for w, r, p in r.fetchall()
     }
 
+    pop = [(
+        (x,y),
+        xs.productivity*ys.productivity,
+    ) for x, xs in scores.items()
+        for y, ys in scores.items()
+    ]
+
     while True:
         (x, y), = random.sample(
             k=1,
-            population=[
-                (x,y)
-                for x in scores.keys()
-                for y in scores.keys()
-            ],
-            counts=[
-                xs.productivity*ys.productivity
-                for xs in scores.values()
-                for ys in scores.values()
-            ],
+            population=[xy for xy,_ in pop],
+            counts=[score for _,score in pop],
         )
 
         r = db.execute('''
@@ -70,6 +69,7 @@ while True:
         ''', (x, y))
         if r.fetchall()[0][0]:
             # we already know the answer
+            log.info('already got %s + %s', x, y)
             continue
         else:
             break