diff --git a/dfs.tidal b/dfs.tidal
index 1cdc17b..4335607 100644
--- a/dfs.tidal
+++ b/dfs.tidal
@@ -6,10 +6,6 @@ import Data.Array
 
 import qualified Data.Array as A
 
-import Data.Tuple as T
-
-import Data.List
-
 tabulate :: Bounds -> [Vertex] -> Table Int
 tabulate bnds vs = A.array bnds (zip vs [1..])
 --