diff --git a/Cargo.toml b/Cargo.toml
index 91dd2f9..998deec 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -2,7 +2,7 @@
 name = "asciimath-rs"
 description = "AsciiMath parser"
 repository = "https://github.com/trivernis/asciimath-rs"
-version = "0.4.7"
+version = "0.4.8"
 authors = ["trivernis <trivernis@protonmail.com>"]
 edition = "2018"
 readme = "README.md"
diff --git a/src/lib.rs b/src/lib.rs
index dff1b11..5533075 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -118,7 +118,7 @@ mod tests {
 
     #[test]
     fn it_tokenizes_expressions3() {
-        let expression = "[[1, 2],[3, 4]]";
+        let expression = "[[1, 2],[3, 4]] //";
         let mut tokenizer = Tokenizer::new(expression.to_string());
         let tokens = tokenizer.parse();
         assert_eq!(
@@ -139,6 +139,8 @@ mod tests {
                 Token::Text(Text::Number("4".to_string())),
                 Token::Grouping(Grouping::LBracket),
                 Token::Grouping(Grouping::LBracket),
+                Token::Text(Text::Whitespace),
+                Token::Operation(Operation::Slash),
             ]
         );
     }
diff --git a/src/tokens/constants/operations.rs b/src/tokens/constants/operations.rs
index a76a993..ee63dac 100644
--- a/src/tokens/constants/operations.rs
+++ b/src/tokens/constants/operations.rs
@@ -1,26 +1,26 @@
-pub const G_PLUS: &'static[&str] = &["+"];
-pub const G_MINUS: &'static[&str] = &["-"];
-pub const G_CDOT: &'static[&str] = &["*", "cdot"];
-pub const G_AST: &'static[&str] = &["**", "ast"];
-pub const G_STAR: &'static[&str] = &["***", "star"];
-pub const G_SLASH: &'static[&str] = &["////"];
-pub const G_BACKSLASH: &'static[&str] = &["\\\\", "backslash", "setminus"];
-pub const G_TIMES: &'static[&str] = &["xx", "times"];
-pub const G_DIV: &'static[&str] = &["-:", "div"];
-pub const G_LTIMES: &'static[&str] = &["|><", "ltimes"];
-pub const G_RTIMES: &'static[&str] = &["><|", "rtimes"];
-pub const G_BOWTIE: &'static[&str] = &["|><|", "bowtie"];
-pub const G_CIRC: &'static[&str] = &["@", "circ"];
-pub const G_OPLUS: &'static[&str] = &["o+", "oplus"];
-pub const G_OTIMES: &'static[&str] = &["ox", "otimes"];
-pub const G_ODOT: &'static[&str] = &["o.", "odot"];
-pub const G_SUM: &'static[&str] = &["sum"];
-pub const G_PROD: &'static[&str] = &["prod"];
-pub const G_WEDGE: &'static[&str] = &["^^", "wedge"];
-pub const G_BIDWEDGE: &'static[&str] = &["^^^", "bidwedge"];
-pub const G_VEE: &'static[&str] = &["vv", "vee"];
-pub const G_BIGVEE: &'static[&str] = &["vvv", "bigvee"];
-pub const G_CAP: &'static[&str] = &["nn", "cap"];
-pub const G_BIGCAP: &'static[&str] = &["nnn", "bigcap"];
-pub const G_CUP: &'static[&str] = &["uu", "cup"];
-pub const G_BIGCUP: &'static[&str] = &["uuu", "bigcup"];
\ No newline at end of file
+pub const G_PLUS: &'static [&str] = &["+"];
+pub const G_MINUS: &'static [&str] = &["-"];
+pub const G_CDOT: &'static [&str] = &["*", "cdot"];
+pub const G_AST: &'static [&str] = &["**", "ast"];
+pub const G_STAR: &'static [&str] = &["***", "star"];
+pub const G_SLASH: &'static [&str] = &["//"];
+pub const G_BACKSLASH: &'static [&str] = &["\\\\", "backslash", "setminus"];
+pub const G_TIMES: &'static [&str] = &["xx", "times"];
+pub const G_DIV: &'static [&str] = &["-:", "div"];
+pub const G_LTIMES: &'static [&str] = &["|><", "ltimes"];
+pub const G_RTIMES: &'static [&str] = &["><|", "rtimes"];
+pub const G_BOWTIE: &'static [&str] = &["|><|", "bowtie"];
+pub const G_CIRC: &'static [&str] = &["@", "circ"];
+pub const G_OPLUS: &'static [&str] = &["o+", "oplus"];
+pub const G_OTIMES: &'static [&str] = &["ox", "otimes"];
+pub const G_ODOT: &'static [&str] = &["o.", "odot"];
+pub const G_SUM: &'static [&str] = &["sum"];
+pub const G_PROD: &'static [&str] = &["prod"];
+pub const G_WEDGE: &'static [&str] = &["^^", "wedge"];
+pub const G_BIDWEDGE: &'static [&str] = &["^^^", "bidwedge"];
+pub const G_VEE: &'static [&str] = &["vv", "vee"];
+pub const G_BIGVEE: &'static [&str] = &["vvv", "bigvee"];
+pub const G_CAP: &'static [&str] = &["nn", "cap"];
+pub const G_BIGCAP: &'static [&str] = &["nnn", "bigcap"];
+pub const G_CUP: &'static [&str] = &["uu", "cup"];
+pub const G_BIGCUP: &'static [&str] = &["uuu", "bigcup"];