diff --git a/src/lib.rs b/src/lib.rs
index 1e95384..6ad2b64 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -40,10 +40,26 @@ impl InstanceSettings {
         todo!()
     }
 
-    pub fn parse_prefstring(&self, pref_string: Option<impl AsRef<str>>) -> &str {
-        todo!()
-    }
+}
 
+impl Default for InstanceSettings {
+    fn default() -> Self {
+        let pronouns: Vec<Pronoun> = vec![
+            ["she",  "her",  "her",   "hers",    "herself"  ].into(),
+            ["he",   "him",  "his",   "his",     "himself"  ].into(),
+            ["they", "them", "their", "theirs",  "themself" ].into(),
+            ["it",   "it",   "its",   "its",     "itself"   ].into(),
+            ["xe",   "xem",  "xyr",   "xyrs",    "xemself"  ].into(),
+            ["ze",   "zem",  "zyr",   "zyrs",    "zemself"  ].into(),
+            ["fae",  "faer", "faer",  "faers",   "faerself" ].into(),
+            ["ne",   "nem",  "nir",   "nirs",    "nirself"  ].into(),
+            ["e",    "em",   "eir",   "eirs",    "eirself"  ].into(),
+            ["vey",  "vem",  "ver",   "vers",    "verself"  ].into(),
+        ];
+        InstanceSettings {
+            pronoun_list: pronouns
+        }
+    }
 }
 
 /// A standard five-form pronoun set
@@ -95,6 +111,18 @@ pub struct Pronoun {
 
 }
 
+impl Pronoun {
+	pub fn render_threeform(&self) -> String {
+		format!("{}/{}/{}", self.subject_pronoun, self.object_pronoun, self.possesive_pronoun)
+	}
+}
+
+impl fmt::Display for Pronoun {
+	fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+		f.write_str(&self.render_threeform())
+	}
+}
+
 impl From<[String; 5]> for Pronoun {
     fn from(five_form: [String; 5]) -> Self {
         let mut five_form = IntoIterator::into_iter(five_form);
@@ -109,15 +137,20 @@ impl From<[String; 5]> for Pronoun {
     }
 }
 
+impl From<[&str; 5]> for Pronoun {
+    fn from(five_form: [&str; 5]) -> Self {
+        (&five_form).into()
+    }
+}
+
 impl From<&[&str; 5]> for Pronoun {
     fn from(five_form: &[&str; 5]) -> Self {
-        let mut five_form = IntoIterator::into_iter(five_form);
         Pronoun {
-            subject_pronoun:      five_form.next().unwrap().to_string(),
-            object_pronoun:       five_form.next().unwrap().to_string(),
-            possesive_determiner: five_form.next().unwrap().to_string(),
-            possesive_pronoun:    five_form.next().unwrap().to_string(),
-            reflexive_pronoun:    five_form.next().unwrap().to_string(),
+            subject_pronoun:      five_form[0].to_string(),
+            object_pronoun:       five_form[1].to_string(),
+            possesive_determiner: five_form[2].to_string(),
+            possesive_pronoun:    five_form[3].to_string(),
+            reflexive_pronoun:    five_form[4].to_string(),
         }
     }
 }