diff --git a/lib/adagrams.rb b/lib/adagrams.rb
index e69de29..53e0e07 100644
--- a/lib/adagrams.rb
+++ b/lib/adagrams.rb
@@ -0,0 +1,159 @@
+require 'csv'
+
+# wave 1
+# method draw_letters randomly generates 10 letters, stores them in an array,
+# returns that array of letters
+def draw_letters
+  compact_bag = {
+    "A" => 9,
+    "B" => 2, 
+    "C" => 2, 
+    "D" => 4, 
+    "E" => 12, 
+    "F" => 2, 
+    "G" => 3, 
+    "H" => 2, 
+    "I" => 9,
+    "J" => 1, 
+    "K" => 1, 
+    "L" => 4,
+    "M" => 2,
+    "N" => 6,
+    "O" => 8,
+    "P" => 2, 
+    "Q" => 1, 
+    "R" => 6,
+    "S" => 4, 
+    "T" => 6,
+    "U" => 4,
+    "V" => 2,
+    "W" => 2,
+    "X" => 1, 
+    "Y" => 2, 
+    "Z" => 1
+  }
+  expanded_bag = []
+  compact_bag.each do |letters, number|
+    number.times do 
+      expanded_bag << letters
+    end
+  end 
+
+  random = []
+
+  10.times do 
+  x = rand expanded_bag.length
+    while random.include? x
+      x = rand expanded_bag.length
+    end
+  random << x
+  end
+
+  hand = random.map {|number| expanded_bag[number]}
+end
+
+#wave 2
+# method uses_available_letters? takes a string and an array of letters
+# to determine if the string can be made from the array of letters
+# returns true if string is valid (can be made from array of letters)
+# returns false if string is invalid (cannot be made from array of letters)
+def uses_available_letters? (input, letters_in_hand)
+  letters_in_hand.join.include? input
+end
+
+#wave 3 
+# method score_word takes string of characters 
+# and returns an integer representing the number of points 
+def score_word(word)
+  score = 0
+
+  word.upcase.each_char do |char|
+    case char
+      when "A", "E", "I", "O", "U", "L", "N", "R", "S", "T"
+        score += 1
+      when "D", "G"
+        score += 2
+      when "B", "C", "M", "P"
+        score += 3
+      when "F", "H", "V", "W", "Y"
+        score += 4
+      when "K"
+        score += 5
+      when "J", "X" 
+        score += 8
+      when "Q", "Z"
+        score += 10
+      else 
+        puts "Invalid char found."
+    end
+  end
+
+  if [7,8,9,10].include? word.length
+    score += 8
+  end
+
+  return score
+end
+
+# Wave 4
+# method has one parameter (word)
+# returns a hash (winning word, score) the highest scoring word
+# if tied using tie-breaking method (when choosing do the followings: prefer word with fewer letters ;
+# if multiple words have the same score, choose the one w/fewest letters unless one word has 10 letters, 
+# if letters and scores are the same, choose the first one you see)
+def highest_score_from(words) 
+  all_scores = []
+
+  words.each do |word|
+    score = score_word(word)
+    all_scores << {:word => word, :score => score}
+  end
+  
+  highest_score = all_scores.max_by{|word_with_score| word_with_score[:score]}
+  p "This is one max score: #{highest_score}"
+  
+  all_highscores = all_scores.select{|word_with_score| word_with_score[:score] == highest_score[:score]}
+  puts "This is ALL the words that match high score: #{all_highscores}"
+  
+  tied_words = []
+  all_highscores.each do |hash|
+    tied_words << hash[:word]
+  end
+
+  winning_word = break_ties(tied_words)
+
+  puts "This is our winning word: #{winning_word}"
+  return {:word => winning_word, :score => (highest_score[:score])}
+end
+
+# method break_ties applies tie-breaking logic to a set of words with the same score
+# parameter: array of words that share the same score
+# returns the resulting winning word after tie-breaking rules have been applied
+def break_ties(tied_words)
+  puts "This is our array of just words: #{tied_words}"
+  all_tens = tied_words.select{|word| word.length == 10}
+
+  winning_word = ""
+  if all_tens.size >= 1 
+    winning_word = all_tens[0]
+  else
+    all_smallest = tied_words.min_by{|word| word.length}
+    if all_smallest.class == Array 
+      winning_word = all_smallest[0]
+    else
+      winning_word = all_smallest
+    end
+  end
+  return winning_word
+end
+
+# wave 5
+# check if the the input is found in the english dictionary
+# add a method called is_in_english_dict?
+# has one parameter: input, which is a string
+# returns a boolean t/f
+
+def is_in_english_dict? (input)
+  array_of_dictionary = CSV.read('../assets/dictionary-english.csv').map(&:to_a)
+  return array_of_dictionary.include? input
+end
\ No newline at end of file
diff --git a/test/adagrams_test.rb b/test/adagrams_test.rb
index 90ec44d..d7a20b1 100644
--- a/test/adagrams_test.rb
+++ b/test/adagrams_test.rb
@@ -42,7 +42,7 @@
       test_word = 'DOG'
 
       is_valid = uses_available_letters? test_word, drawn_letters
-
+      
       expect(is_valid).must_equal false
     end