diff --git a/Cargo.lock b/Cargo.lock
index 5a94fa6..ace30be 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -78,6 +78,7 @@ dependencies = [
  "reqwest-retry",
  "serde",
  "serde_json",
+ "static_init",
  "tiktoken-rs",
  "tokio",
 ]
@@ -260,6 +261,12 @@ version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
+[[package]]
+name = "cfg_aliases"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fd16c4719339c4530435d38e511904438d07cce7950afa3718a84ac36c10e89e"
+
 [[package]]
 name = "chrono"
 version = "0.4.31"
@@ -1571,6 +1578,34 @@ dependencies = [
  "windows-sys 0.48.0",
 ]
 
+[[package]]
+name = "static_init"
+version = "1.0.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8a2a1c578e98c1c16fc3b8ec1328f7659a500737d7a0c6d625e73e830ff9c1f6"
+dependencies = [
+ "bitflags 1.3.2",
+ "cfg_aliases",
+ "libc",
+ "parking_lot 0.11.2",
+ "parking_lot_core 0.8.6",
+ "static_init_macro",
+ "winapi",
+]
+
+[[package]]
+name = "static_init_macro"
+version = "1.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "70a2595fc3aa78f2d0e45dd425b22282dd863273761cc77780914b2cf3003acf"
+dependencies = [
+ "cfg_aliases",
+ "memchr",
+ "proc-macro2",
+ "quote",
+ "syn 1.0.109",
+]
+
 [[package]]
 name = "strsim"
 version = "0.10.0"
diff --git a/Cargo.toml b/Cargo.toml
index 64b77b0..20f1269 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -27,6 +27,7 @@ tokio = { version = "1", features = ["full"] }
 itertools = "0.12"
 derive_builder = "0.12.0"
 rayon = "1.8.0"
+static_init = "1.0.3"
 
 [features]
 part2 = []
diff --git a/src/bin/day8.rs b/src/bin/day8.rs
index 9fb40ce..c4eb7ae 100644
--- a/src/bin/day8.rs
+++ b/src/bin/day8.rs
@@ -2,12 +2,16 @@ use aoc23::prelude::*;
 use derive_builder::Builder;
 use itertools::Itertools;
 use rayon::prelude::*;
-use std::{collections::HashMap, str::FromStr, time::Instant};
+use std::{collections::HashMap, time::Instant};
 
 extern crate regex;
 
 use regex::Regex;
-use std::error::Error;
+use static_init::dynamic;
+
+#[dynamic]
+static RE_PARSE_NODE: Regex =
+    Regex::new(r"(?<id>\w{3}).*?(?<left>\w{3}).*?(?<right>\w{3})").expect("re_parse_node invalid");
 
 #[derive(Debug, Builder, Clone)]
 struct Node<'a> {
@@ -18,9 +22,9 @@ struct Node<'a> {
 
 impl<'a> Node<'a> {
     fn new(s: &'a str) -> Result<Self> {
-        let re = Regex::new(r"(?<id>\w{3}).*?(?<left>\w{3}).*?(?<right>\w{3})")?
-            .captures(s)
-            .expect("No match for regex");
+        // let re = Regex::new(r"(?`<id>`\w{3}) = ((?`<left>`\w{3}), (?`<right>`\w{3}))")?
+        // let re = Regex::new(r"(?`<id>`\w{3})._?(?`<left>`\w{3})._?(?`<right>`\w{3})")?
+        let re = RE_PARSE_NODE.captures(s).expect("No match for regex");
         Ok(NodeBuilder::default()
             .id(re.name("id").expect("no id").as_str())
             .left(re.name("left").expect("no left").as_str())