diff --git a/exercises.md b/exercises.md
index 55e8c7b..48e2a54 100644
--- a/exercises.md
+++ b/exercises.md
@@ -30,15 +30,23 @@ cat words_100k.txt | match "a.*e.*i.*o.*u" | count
     8 words have all five vowels (aeiou)
 
 ## 5. Which words have two l's in a row, two m's in a row, and two t's in a row? (they don't have to be in that order)
-???Nothing prints out, no error messages in terminal.
+Corrected. Needed to use file, words_370k.txt
+cat words_370k.txt | match "ll" | match "tt" | match "mm"
+    noncommittally
+
+Used incorrect file, words_100k.txt. Nothing printed out, no error messages in terminal.
 cat words_100k.txt | match "l.+l.+m.+m.+t.+t"
 cat words_100k.txt | match "ll.+mm.+tt"
 cat words_100k.txt | match "l.*l.*m.*m.*t.*t"
         There are no words that have two l's, two m's, and two t's each in a row
         If using a match separately for each set of the "letters in a row," then a lot of words will match the criteria.
-    cat words_100k.txt | match "ll"
+    cat words_100k.txt | match "ll" | match "mm"
     cat words_100k.txt | match "mm" 
     cat words_100k.txt | match "tt"
+    cat words_100k.txt | match "ll" | match "tt"
+    cat words_100k.txt | match "ll" | match "tt" | match "mm"
+
+    
 
 ## 6. How many words have sixteen or more letters?
 cat words_100k.txt | length | order | put 16 | lessthan 0 1 -e | count
@@ -70,7 +78,7 @@ cat words_100k.txt | length | put 10 | equal | count
     9869
 
 ## 8. What's the longest word which doesn't have any repeated letters?
-??? Is this correct
+This is correct...
 cat words_100k.txt | length | unique 1 | length | equal 0 2 | order
         13 abcdeilnprtuy 13 unpredictably
         13 abceghiloprty 13 copyrightable
@@ -79,10 +87,19 @@ cat words_100k.txt | length | unique 1 | length | equal 0 2 | order
         13 acegilmnopsty 13 salpingectomy
 
 ## 9. What's the longest word which only uses four different letters?
-???tried this, error message. Thinking 4 unique letters
+Corrected
+cat words_100k.txt | unique |length |put 4 |equal |pluck 3 |length |order
+re-read this and write about it..
+Prints out all unique letters with 4-letter words with the length in alphabetical order 
+    Note: pluck 3 - selects just the word at index 3
+
+Tried this, error message. Thinking 4 unique letters
 How do I change the length to sort "4" unique letters?
-    cat words_100k.txt | length | unique 1 | length | order -r
+    cat words_100k.txt | length | unique 1 | length | order -r | head
          Scrolled up to see longest word, elns, 13 senselessness
+    cat words_100k.txt | length | unique 1 | length | order -r | head
+    cat words_100k.txt | unique
+    cat words_100k.txt | unique | length
 
 ## 10. If you rearrange the letters in "sidebar," what other words can you create?
 cat words_100k.txt | match "s.*i.*d.*e.*b.*a.*r"