diff --git a/Ch 17. Hard/Q17_07_Baby_Names.cs b/Ch 17. Hard/Q17_07_Baby_Names.cs
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+++ b/Ch 17. Hard/Q17_07_Baby_Names.cs	
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+using ctci.Contracts;
+using ctci.Library;
+using System;
+
+namespace Chapter17
+{
+    public class Q17_07_Baby_Names : IQuestion
+    {
+
+        public void Run()
+        {
+            // Input
+			var names = new Dictionary<string, int>();
+			
+			names.Add("John", 3);
+			names.Add("Jonathan", 4);
+			names.Add("Johnny", 5);
+			names.Add("Chris", 1);
+			names.Add("Kris", 3);
+			names.Add("Brian", 2);
+			names.Add("Bryan", 4);
+			names.Add("Carleton", 4);
+			
+			var synonyms = new Dictionary<string,string>();
+			synonyms.Add("John","Jonathan");
+			synonyms.Add("Jonathan","Johnny");
+			synonyms.Add("Chris","Kris");
+			synonyms.Add("Brian","Bryan");
+			
+			// Build connection between names
+			var allNames = new Dictionary<string,string>();
+			foreach (var s in synonyms) {
+				string str;
+				if (allNames.TryGetValue(s.Key, out str)) {
+					allNames.Add(s.Value, str);
+				}
+				else if (allNames.TryGetValue(s.Value, out str)) {
+					allNames.Add(s.Key, str);
+				}
+				else {
+					allNames.Add(s.Key, s.Value);
+					allNames.Add(s.Value, s.Value);
+				}
+			}
+			
+			// Results
+			var results = new Dictionary<string,int>();
+			foreach(var n in names) {
+				// Find the chosen name in allNames
+				string str = n.Key;
+				if (allNames.TryGetValue(n.Key, out str) == false) {
+					str = n.Key; // If doesn't exist just use this name
+				}
+				// Finllay we get the result
+				int temp = 0;
+				results.TryGetValue(str, out temp);
+				temp += n.Value;
+				results[str] = temp;
+			}
+			
+			// Print Output
+			foreach (var r in results) {
+				Console.WriteLine(r.Key + " " + r.Value);
+			}
+			
+			Console.WriteLine("Done.");
+        }
+    }
+}
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