diff --git a/planning.md b/planning.md
index 40d428a..715b4c1 100644
--- a/planning.md
+++ b/planning.md
@@ -37,15 +37,18 @@ return digit_names[number]
 ## Integers under 20
 If the integer is under 10, then use the procedure described above. 
 Otherwise, ... (this is where you take over!)
+10, 11, 12, 13, 14, 15, 16, 17, 18, 19 all need similar to under 10
 
 ## Integers under 100
-
+first digit 2-9 define then second digit under 10
 
 ## Integers under 1000
-
+1st digit 1 thousand 2 thousand, etc 
+2nd digit 1 hundred 2 hundred, etc 
+3rd digit under 100
 
 ## Integers under 1000000
-
+keep doing same pattern to get to more digits in sets of 9
 
 ## Negative integers down to -1 million
 We won't deal with negative integers in this problem set,