diff --git a/nandu/src/main.rs b/nandu/src/main.rs
index 28e76de..2cc01a0 100644
--- a/nandu/src/main.rs
+++ b/nandu/src/main.rs
@@ -2,8 +2,8 @@ mod nandu;
 
 use anyhow::Result;
 use clap::Parser;
+use nandu::output::Output;
 use nandu::Environment;
-use std::arch::x86_64::_mm256_stream_pd;
 use std::path::Path;
 
 #[derive(Parser, Debug)]
@@ -19,9 +19,18 @@ fn main() -> Result<()> {
 
     let env = Environment::new(Path::new(&args.file))?;
 
-    let state = env.simulate(vec![false, false])?;
+    let mut output = Output::new();
 
-    println!("State: {:?}", state);
+    for i in 0..2usize.pow(env.sources() as u32) {
+        let mut sources = vec![false; env.sources()];
+        for j in 0..env.sources() {
+            sources[j] = (i & (1 << j)) > 0;
+        }
+        let leds = env.simulate(&sources)?;
+        output.push(sources, leds);
+    }
+
+    println!("{}", output);
 
     Ok(())
 }
diff --git a/nandu/src/nandu/mod.rs b/nandu/src/nandu/mod.rs
index 9e7d2ff..1ff3d75 100644
--- a/nandu/src/nandu/mod.rs
+++ b/nandu/src/nandu/mod.rs
@@ -1,4 +1,5 @@
 mod gate;
+pub mod output;
 
 use crate::nandu::gate::Gate;
 use crate::nandu::gate::Gate::Passthrough;
@@ -32,7 +33,7 @@ impl Environment {
 
         for (y, line) in data.lines().filter(|x| !x.is_empty()).enumerate() {
             let mut skip = false;
-            for (x, field) in line.split(" ").filter(|x| !x.is_empty()).enumerate() {
+            for field in line.split(" ").filter(|x| !x.is_empty()) {
                 if field.contains("Q") {
                     env.logic[y].push(Some(Gate::Source));
                     env.sources += 1;
@@ -69,9 +70,11 @@ impl Environment {
         self.sources
     }
 
-    pub fn simulate(&self, sources: Vec<bool>) -> Result<Vec<bool>> {
+    pub fn simulate(&self, sources: &Vec<bool>) -> Result<Vec<bool>> {
         let mut state = vec![false; self.width];
 
+        let mut leds = Vec::new();
+
         let mut source_index = 0usize;
 
         for row in &self.logic {
@@ -83,7 +86,7 @@ impl Environment {
                             state[x] = sources[source_index];
                             source_index += 1;
                         }
-                        Gate::Led => (),
+                        Gate::Led => leds.push(state[x]),
                         _ => {
                             (state[x], state[x + 1]) = g.compute(state[x], state[x + 1]);
                             x += 1;
@@ -93,9 +96,10 @@ impl Environment {
                 }
                 x += 1;
             }
+            // println!("{:?}", row);
             // println!("{:?}", state);
         }
 
-        Ok(state)
+        Ok(leds)
     }
 }
diff --git a/nandu/src/nandu/output.rs b/nandu/src/nandu/output.rs
new file mode 100644
index 0000000..2ef4664
--- /dev/null
+++ b/nandu/src/nandu/output.rs
@@ -0,0 +1,56 @@
+use std::fmt::{Display, Formatter};
+
+pub struct Output {
+    sources: Vec<Vec<bool>>,
+    leds: Vec<Vec<bool>>,
+    n: usize,
+}
+
+impl Display for Output {
+    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
+        for x in 0..self.sources[0].len() {
+            write!(f, "| Q{:<2}", x + 1)?;
+        }
+        write!(f, "|")?;
+        for x in 0..self.leds[0].len() {
+            write!(f, "| L{:<2}", x + 1)?;
+        }
+        write!(f, "|\n")?;
+
+        for _ in 0..self.sources[0].len() {
+            write!(f, "|{:-<4}", "-")?;
+        }
+        write!(f, "|")?;
+        for _ in 0..self.leds[0].len() {
+            write!(f, "|{:-<4}", "-")?;
+        }
+        write!(f, "|\n")?;
+
+        for y in 0..self.n {
+            for x in 0..self.sources[y].len() {
+                write!(f, "| {:b}  ", self.sources[y][x] as u8)?;
+            }
+            write!(f, "|")?;
+            for x in 0..self.leds[y].len() {
+                write!(f, "| {:b}  ", self.leds[y][x] as u8)?;
+            }
+            write!(f, "|\n")?;
+        }
+        Ok(())
+    }
+}
+
+impl Output {
+    pub fn new() -> Self {
+        Self {
+            sources: Vec::new(),
+            leds: Vec::new(),
+            n: 0,
+        }
+    }
+    pub fn push(&mut self, sources: Vec<bool>, leds: Vec<bool>) {
+        self.sources.push(sources);
+        self.leds.push(leds);
+        self.n += 1;
+    }
+}