diff --git a/src/App/Fontifier.hs b/src/App/Fontifier.hs
index c2440c2..d76d75c 100644
--- a/src/App/Fontifier.hs
+++ b/src/App/Fontifier.hs
@@ -187,8 +187,9 @@ invalidAccesses = invAcc [] 0
 invAcc :: [(String,Slice,Bool)] -> Int -> CheckString -> Slices
 invAcc a i ('{':t) = invAcc (enterBlock a) (i+1) t
 invAcc a i ('}':t) = getUnread a ++ invAcc (leaveBlock a) (i+1) t
-invAcc a i ('[':t) = invAcc a (i+1 + g) (drop g t)      -- TODO check reads in first part
+invAcc a i ('[':t) = map snd (filter (\x -> isUnassigned x a) r) ++ invAcc (markReads r a) (i+1 + g) (drop g t)      -- TODO check reads in first part
   where g = fromJust (elemIndex ':' t)
+        r = getReads (i+1) (take g t)
 -- when reading an assignment :word: =
 -- put :word:, slice, false in the list
 -- when reading a read access scan the list for the variable
@@ -210,6 +211,16 @@ invAcc a i s@(c:t) = let writeAcc = getWrite i s
                         else invAcc (a ++ [fromJust writeAcc]) (i+matchLen) (drop matchLen s) -- assignment in accumStr, advance offset to end
 invAcc _ _ _ = []
 
+getReads :: Int -> String -> [(String,Slice)]
+getReads _ "" = []
+getReads i ('.':t) = getReads (i+1 + g) (drop g t)
+  where g = length $ fst $ fromJust $ getRead 0 t
+getReads i s@(c:ss)
+  | isNothing v = getReads (i+1) ss
+  | otherwise = let l = length $ fst $ fromJust v
+                in fromJust v : getReads (i+l) (drop l s)
+    where v = getRead i s
+
 getWrite :: Int -> String -> Maybe (String, Slice, Bool)
 getWrite offset s = ((Tdfa.matchOnceText §~ "^(\\**[[:word:]]+)[[:blank:]]*=") s) >>= matchToA
   where matchToA (before, match, after) =
@@ -228,6 +239,10 @@ isUnassigned (s,_) = null . filter (\(t,_,_) -> t == s)
 markRead :: (String,Slice) -> [(String,Slice,Bool)] -> [(String,Slice,Bool)]
 markRead (s,_) = map (\(v,p,b) -> (v,p,b || v == s))
 
+markReads :: [(String,Slice)] -> [(String,Slice,Bool)] -> [(String,Slice,Bool)]
+markReads [] a = a
+markReads (r:rs) a = markReads rs $ markRead r a
+
 enterBlock :: [(String,Slice,Bool)] -> [(String,Slice,Bool)]
 enterBlock = map (\(v,s,b) -> ('*':v,s,b))