diff --git a/lr/ch2/gcd/Cargo.toml b/pr/ch2/gcd/Cargo.toml
similarity index 100%
rename from lr/ch2/gcd/Cargo.toml
rename to pr/ch2/gcd/Cargo.toml
diff --git a/lr/ch2/gcd/src/main.rs b/pr/ch2/gcd/src/main.rs
similarity index 100%
rename from lr/ch2/gcd/src/main.rs
rename to pr/ch2/gcd/src/main.rs
diff --git a/lr/ch2/iron-gcd/Cargo.toml b/pr/ch2/iron-gcd/Cargo.toml
similarity index 100%
rename from lr/ch2/iron-gcd/Cargo.toml
rename to pr/ch2/iron-gcd/Cargo.toml
diff --git a/lr/ch2/iron-gcd/src/main.rs b/pr/ch2/iron-gcd/src/main.rs
similarity index 100%
rename from lr/ch2/iron-gcd/src/main.rs
rename to pr/ch2/iron-gcd/src/main.rs
diff --git a/lr/ch2/mandelbrot/Cargo.toml b/pr/ch2/mandelbrot/Cargo.toml
similarity index 100%
rename from lr/ch2/mandelbrot/Cargo.toml
rename to pr/ch2/mandelbrot/Cargo.toml
diff --git a/lr/ch2/mandelbrot/src/main.rs b/pr/ch2/mandelbrot/src/main.rs
similarity index 100%
rename from lr/ch2/mandelbrot/src/main.rs
rename to pr/ch2/mandelbrot/src/main.rs