diff --git a/parser/src/pre/lexer.rs b/parser/src/pre/lexer.rs
index 9ef0a1e..68a8ab1 100644
--- a/parser/src/pre/lexer.rs
+++ b/parser/src/pre/lexer.rs
@@ -199,11 +199,6 @@ where
     fn s_p(&mut self) -> Option<&(usize, u8)> {
         self.src.peek()
     }
-
-    /// source peek nth
-    fn s_p_n(&mut self, n: usize) -> Option<&(usize, u8)> {
-        self.src.peek_nth(n)
-    }
 }
 
 macro_rules! triple_punct {
@@ -270,7 +265,7 @@ where
             let (span, char1) = self.src.next()?;
             start_span = span;
             let char2 = self.src.peek().map(|(_, c)| *c);
-            let char3 = self.src.peek_nth(2).map(|(_, c)| *c);
+            let char3 = self.src.peek_nth(1).map(|(_, c)| *c);
 
             match (char1, char2, char3) {
                 // IDENTIFIER
@@ -377,6 +372,12 @@ mod tests {
         lex_test!(src);
     }
 
+    #[test]
+    fn left_left_chevron_eq() {
+        let src = r#". <<= ."#;
+        lex_test!(src);
+    }
+
     #[test]
     fn hello_world() {
         let src = r#"
@@ -386,4 +387,16 @@ int main() {
 "#;
         lex_test!(src);
     }
+
+    #[test]
+    fn some_operators() {
+        let src= r#"
+int hello(const char* uwu) <%
+    uwu[5] <<= 23;
+    *uwu * (p++);
+    return p;
+%>"#;
+
+        lex_test!(src);
+    }
 }
diff --git a/parser/src/pre/snapshots/parser__pre__lexer__tests__left_left_chevron_eq.snap b/parser/src/pre/snapshots/parser__pre__lexer__tests__left_left_chevron_eq.snap
new file mode 100644
index 0000000..5b29a9c
--- /dev/null
+++ b/parser/src/pre/snapshots/parser__pre__lexer__tests__left_left_chevron_eq.snap
@@ -0,0 +1,24 @@
+---
+source: parser/src/pre/lexer.rs
+expression: tokens
+---
+[
+    (
+        Punctuator(
+            Dot,
+        ),
+        0..1,
+    ),
+    (
+        Punctuator(
+            LeftLeftChevronEq,
+        ),
+        2..5,
+    ),
+    (
+        Punctuator(
+            Dot,
+        ),
+        6..7,
+    ),
+]
diff --git a/parser/src/pre/snapshots/parser__pre__lexer__tests__some_operators.snap b/parser/src/pre/snapshots/parser__pre__lexer__tests__some_operators.snap
new file mode 100644
index 0000000..70218e3
--- /dev/null
+++ b/parser/src/pre/snapshots/parser__pre__lexer__tests__some_operators.snap
@@ -0,0 +1,174 @@
+---
+source: parser/src/pre/lexer.rs
+expression: tokens
+---
+[
+    (
+        Identifier(
+            "int",
+        ),
+        1..4,
+    ),
+    (
+        Identifier(
+            "hello",
+        ),
+        5..10,
+    ),
+    (
+        Punctuator(
+            ParenOpen,
+        ),
+        10..11,
+    ),
+    (
+        Identifier(
+            "const",
+        ),
+        11..16,
+    ),
+    (
+        Identifier(
+            "char",
+        ),
+        17..21,
+    ),
+    (
+        Punctuator(
+            Asterisk,
+        ),
+        21..22,
+    ),
+    (
+        Identifier(
+            "uwu",
+        ),
+        23..26,
+    ),
+    (
+        Punctuator(
+            ParenClose,
+        ),
+        26..27,
+    ),
+    (
+        Punctuator(
+            BraceOpen,
+        ),
+        28..30,
+    ),
+    (
+        Identifier(
+            "uwu",
+        ),
+        35..38,
+    ),
+    (
+        Punctuator(
+            BracketOpen,
+        ),
+        38..39,
+    ),
+    (
+        PpNumber(
+            "5",
+        ),
+        39..40,
+    ),
+    (
+        Punctuator(
+            BracketClose,
+        ),
+        40..41,
+    ),
+    (
+        Punctuator(
+            LeftLeftChevronEq,
+        ),
+        42..45,
+    ),
+    (
+        PpNumber(
+            "23",
+        ),
+        46..48,
+    ),
+    (
+        Punctuator(
+            Semicolon,
+        ),
+        48..49,
+    ),
+    (
+        Punctuator(
+            Asterisk,
+        ),
+        54..55,
+    ),
+    (
+        Identifier(
+            "uwu",
+        ),
+        55..58,
+    ),
+    (
+        Punctuator(
+            Asterisk,
+        ),
+        59..60,
+    ),
+    (
+        Punctuator(
+            ParenOpen,
+        ),
+        61..62,
+    ),
+    (
+        Identifier(
+            "p",
+        ),
+        62..63,
+    ),
+    (
+        Punctuator(
+            PlusPlus,
+        ),
+        63..65,
+    ),
+    (
+        Punctuator(
+            ParenClose,
+        ),
+        65..66,
+    ),
+    (
+        Punctuator(
+            Semicolon,
+        ),
+        66..67,
+    ),
+    (
+        Identifier(
+            "return",
+        ),
+        72..78,
+    ),
+    (
+        Identifier(
+            "p",
+        ),
+        79..80,
+    ),
+    (
+        Punctuator(
+            Semicolon,
+        ),
+        80..81,
+    ),
+    (
+        Punctuator(
+            BraceClose,
+        ),
+        82..84,
+    ),
+]