diff --git a/exercises.md b/exercises.md
index 3433517..1c9cbb5 100644
--- a/exercises.md
+++ b/exercises.md
@@ -38,6 +38,9 @@ antidisestablishmentarianism
 
 ## 6. How many words have sixteen or more letters?
 
+16 16 responsibilities
+16 18 telecommunications
+`cat words_10k.txt | length | order | put 16 | lessthan 0 1 -e`
 
 ## 7. What's the most frequent 10-letter word?
 
@@ -51,6 +54,8 @@ zoomorphic (but its a tie?)
 
 ## 9. What's the longest word which only uses four different letters?
 
+I am not quite there on this one:
+`cat words_10k.txt | length | order | put 4 | equal 0 1 | unique 2 | length | lessthan 0 2`
 
 ## 10. If you rearrange the letters in "sidebar," what other words can you create?