diff --git a/day7.hs b/day7.hs
index c9b1972..d3fb642 100644
--- a/day7.hs
+++ b/day7.hs
@@ -1,14 +1,21 @@
 import Data.List.Split
 import Data.Char as Char
 import Data.List as List
+import Data.Either as Either
 
 main = do
     software <-  getList <$> getContents
     --let output = operation state state 0 input []
-    let combs = getComb [4,3,2,1,0]
-    let output = List.maximum ( map (\x-> calcthruster software x) combs )
+    let combs = getComb [5,6,7,8,9]
+    mapM putStrLn(map show combs)
+    mapM putStrLn(map show ( map (\x-> part2 $ prepareAmps x software ) combs ))
     -- let output = calcthruster software [4,3,2,1,0] 
-    putStrLn (show output)
+
+data Amplifier = Amplifier{ state :: [Int]
+                            ,index :: Int
+			    ,input :: [Int]
+			    ,output :: [Int] }
+type Outputtype = Either [Int] Amplifier
 
 getList :: String -> [Int]
 getList = map read . splitOn ","
@@ -16,19 +23,49 @@ getList = map read . splitOn ","
 getComb :: [Int] -> [[Int]]
 getComb array = filter ((5==).length.(List.nub)) $ mapM (const array) [1..5] 
 
-calcthruster :: [Int] -> [Int] -> Int
-calcthruster software (p1:p2:p3:p4:p5:_) = do
-	let outputA = operation software software 0 [p1, 0] []
-        let outputB = operation software software 0 [p2, last outputA] []
-        let outputC = operation software software 0 [p3, last outputB] []
-        let outputD = operation software software 0 [p4, last outputC] []
-        let outputE = operation software software 0 [p5, last outputD] []
-        last outputE 
+prepareAmps :: [Int] -> [Int] -> [Amplifier]
+prepareAmps (p1:p2:p3:p4:p5:_) software = do
+      let a = step (Amplifier software 0 [] []) [p1]
+      let b = step (Amplifier software 0 [] []) [p2]
+      let c = step (Amplifier software 0 [] []) [p3]
+      let d = step (Amplifier software 0 [] []) [p4]
+      let e = step (Amplifier software 0 [] []) [p5]
+      let e = Amplifier (state e) (index e) (input e) [0]
+      [a,b,c,d,e]
+
+part2 :: [Amplifier] -> Int
+part2 amps = do
+        let ampA = link (amps!!4) (amps!!0) 
+        let ampB = link (amps!!0) (amps!!1)  
+        let ampC = link (amps!!1) (amps!!2) 
+        let ampD = link (amps!!2) (amps!!3) 
+        let ampE = link (amps!!3) (amps!!4)  
+	if state ampE == [88]  
+               then head (output (amps!!4))
+               else part2 [ampA,ampB,ampC,ampD,ampE] 	
+
+link :: Amplifier -> Amplifier -> Amplifier
+link left calc 
+  | length (output left) == 0 = Amplifier ([88]) (index calc) (input calc) (output calc)
+  | otherwise = step calc [last $ output left]
+
+step :: Amplifier -> [Int] -> Amplifier
+step amp input = operation (drop (index amp) (state amp)) (state amp) (index amp) input []
 
 
-operation :: [Int] -> [Int] -> Int -> [Int] -> [Int] -> [Int]
+calcthrusters :: [Int] -> [Int] -> Int -> Int
+calcthrusters software (p1:p2:p3:p4:p5:_) start = do
+	let outputA = operation software software 0 [p1, start] []
+        let outputB = operation software software 0 [p2, last $ output outputA] []
+        let outputC = operation software software 0 [p3, last $ output outputB] []
+        let outputD = operation software software 0 [p4, last $ output outputC] []
+        let outputE = operation software software 0 [p5, last $ output outputD] []
+        last $ output outputE 
+
+
+operation :: [Int] -> [Int] -> Int -> [Int] -> [Int] -> Amplifier
 operation (99:_) state index input output = 
-	output
+          Amplifier state index input output
 operation (op:x:y:z:_) state index input output 
   | last (digits op) == 1 = do
 	   let newindex = index + 4
@@ -37,7 +74,8 @@ operation (op:x:y:z:_) state index input output
   | last (digits op) == 2 = do 
            let newindex = index + 4
            let newstate = mult (fillup (revertdigs op) 5) x y z state
-	   operation (drop newindex newstate) newstate newindex input output
+           Amplifier state newindex input output  
+	   --operation (drop newindex newstate) newstate newindex input output
   | last (digits op) == 3 = do
 	   let newindex = index + 2
            let newstate = put (fillup (revertdigs op) 3) x (head input) state
@@ -46,7 +84,7 @@ operation (op:x:y:z:_) state index input output
   | last (digits op) == 4 = do
 	   let newindex = index + 2
 	   let newoutput = out (fillup (revertdigs op) 3) output x state
-	   let newinput = drop 1 input  
+	   let newinput = drop 1 input
            operation (drop newindex state) state newindex input newoutput
   | (last (digits op) == 5 )  = do
 	   let newindex = jumpif (fillup (revertdigs op) 4) x y index state