diff --git a/x-tba/maps/03-english-dict-map-populate/main.go b/x-tba/maps/03-english-dict-map-populate/main.go
index 2e7544e..d81188f 100644
--- a/x-tba/maps/03-english-dict-map-populate/main.go
+++ b/x-tba/maps/03-english-dict-map-populate/main.go
@@ -62,7 +62,7 @@ func main() {
 	// fmt.Println("perfect   -> ", dict["perfect"])
 
 	/*
-		#11: looping over a map might be a sign for a design mistake
+		#11: looping over a map might be a sign of a design mistake
 			 in your software.
 
 			 (it prints unordered output)
diff --git a/18-strings/01-bytes-runes-strings/01-charset-table/main.go b/x-tba/strings-revisited/01-bytes-runes-strings/01-charset-table/main.go
similarity index 100%
rename from 18-strings/01-bytes-runes-strings/01-charset-table/main.go
rename to x-tba/strings-revisited/01-bytes-runes-strings/01-charset-table/main.go
diff --git a/18-strings/01-bytes-runes-strings/02-example/main.go b/x-tba/strings-revisited/01-bytes-runes-strings/02-example/main.go
similarity index 100%
rename from 18-strings/01-bytes-runes-strings/02-example/main.go
rename to x-tba/strings-revisited/01-bytes-runes-strings/02-example/main.go
diff --git a/18-strings/04-masker-challenge/main.go b/x-tba/strings-revisited/04-masker-challenge/main.go
similarity index 100%
rename from 18-strings/04-masker-challenge/main.go
rename to x-tba/strings-revisited/04-masker-challenge/main.go
diff --git a/18-strings/04-masker-challenge/spam.txt b/x-tba/strings-revisited/04-masker-challenge/spam.txt
similarity index 100%
rename from 18-strings/04-masker-challenge/spam.txt
rename to x-tba/strings-revisited/04-masker-challenge/spam.txt
diff --git a/18-strings/05-masker-solution/main.go b/x-tba/strings-revisited/05-masker-solution/main.go
similarity index 100%
rename from 18-strings/05-masker-solution/main.go
rename to x-tba/strings-revisited/05-masker-solution/main.go
diff --git a/18-strings/05-masker-solution/spam.txt b/x-tba/strings-revisited/05-masker-solution/spam.txt
similarity index 100%
rename from 18-strings/05-masker-solution/spam.txt
rename to x-tba/strings-revisited/05-masker-solution/spam.txt
diff --git a/18-strings/08-wrapper-example/main.go b/x-tba/strings-revisited/08-wrapper-example/main.go
similarity index 100%
rename from 18-strings/08-wrapper-example/main.go
rename to x-tba/strings-revisited/08-wrapper-example/main.go
diff --git a/18-strings/08-wrapper-example/story.txt b/x-tba/strings-revisited/08-wrapper-example/story.txt
similarity index 100%
rename from 18-strings/08-wrapper-example/story.txt
rename to x-tba/strings-revisited/08-wrapper-example/story.txt
diff --git a/18-strings/exercises/README.md b/x-tba/strings-revisited/exercises/README.md
similarity index 100%
rename from 18-strings/exercises/README.md
rename to x-tba/strings-revisited/exercises/README.md
diff --git a/18-strings/exercises/main.go b/x-tba/strings-revisited/exercises/main.go
similarity index 100%
rename from 18-strings/exercises/main.go
rename to x-tba/strings-revisited/exercises/main.go