diff --git a/S23/mepripri/ToLowerCase.py b/S23/mepripri/ToLowerCase.py
new file mode 100644
index 0000000..ee61abc
--- /dev/null
+++ b/S23/mepripri/ToLowerCase.py
@@ -0,0 +1,39 @@
+import csv
+
+def splitLang(lang):
+    lang=lang.split('-')
+    return lang[0]
+
+def toLower(s,lang):
+    str=''
+    first=0
+    lang=splitLang(lang)
+    if lang=='tr' or lang=='az':
+        for i in s:
+            if i=='I':
+                str+=chr(305)
+            else:
+                str+=i.lower()
+    elif lang=='ga':
+        if (s[0]=='n' or s[0]=='t') and s[1] in ['A','E','I','O','U','Á','É','Í','Ó','Ú']:
+            str+=s[0].lower()+'-'+s[1:].lower()
+        else:
+            str+=s.lower()
+    elif lang=='el':
+        if ord(s[-1])==931:
+            str+=s[:-1].lower()
+            str+=chr(962)
+        else:
+            str=str+s.lower()
+    elif len(lang)!=2:
+        str+='Invalid Language'
+    else:
+        str+=s.lower()
+    return str
+    
+
+with open("tests.tsv") as file:
+    read = csv.reader(file,delimiter="\t")
+    for r in read:
+        print("Word : ",r[0])
+        print("Lowercase : ",toLower(r[0],r[1]),"\n")
\ No newline at end of file
diff --git a/S23/mepripri/myers.tsv b/S23/mepripri/myers.tsv
index 42ee339..54037e7 100644
--- a/S23/mepripri/myers.tsv
+++ b/S23/mepripri/myers.tsv
@@ -1,3 +1,25 @@
 {"a" : 3, "b" : 4, "c" : 5}	scalene
+{"a" : 9, "b" : 6, "c" : 8}	scalene
+{"a" : 9.5, "b" : 6.4, "c" : 8.6}	scalene
+{"a" : 9, "b" : 6.5, "c" : 8.5}	scalene
 {"a" : 3, "b" : 3, "c" : 1}	isosceles
+{"a" : 3.5, "b" : 1, "c" : 3.5}	isosceles
+{"a" : 3.5, "b" : 1.5, "c" : 3.5}	isosceles
+{"a" : 3.0, "b" : 1.0, "c" : 3}	isosceles
+{"a" : 3, "b" : 3, "c" : 3}	equilateral
+{"a" : 3.4, "b" : 3.4, "c" : 3.4}	equilateral
+{"a" : 3.0, "b" : 3, "c" : 3}	equilateral
+{"a" : 3.0, "b" : 3.0, "c" : 3}	equilateral
+{"a" : , "b" : , "c" : }	error
+{"a" : , "b" : 4, "c" : 100}	error
+{"a" : 3, "b" : , "c" : 100}	error
+{"a" : 3, "b" : 4, "c" : }	error
+{"a" : 3, "b" : , "c" : }	error
+{"a" : , "b" : 4, "c" : }	error
+{"a" : , "b" : , "c" : 100}	error
 {"a" : 3, "b" : 4, "c" : 100}	error
+{"a" : 3.5, "b" : 4.5, "c" : 10}	error
+{"a" : 3, "b" : 4, "c" : 7}	error
+{"a" : 3.5, "b" : 4.5, "c" : 8}	error
+{"a" : 3.5, "b" : 4.5, "c" : }	error
+{"a" : 3.5, "b" : , "c" : 4.5}	error
diff --git a/S23/mepripri/tests.tsv b/S23/mepripri/tests.tsv
index bb7a831..3e28083 100644
--- a/S23/mepripri/tests.tsv
+++ b/S23/mepripri/tests.tsv
@@ -1,5 +1,6 @@
 HELLO	en	hello
 WORLD	en-US	world
+WORLD	eng-US	Invalid Language
 cAmEl	en-IE	camel
 ---OK	en-Latn	---ok
 tAcht	ga	t-acht
@@ -7,12 +8,22 @@ tACHT	ga	t-acht
 TACHT	ga	tacht
 nAthair	ga	n-athair
 nATHAIR	ga	n-athair
-NATHAIR	ga	nathair
+NATHAIR	ga-IE	nathair
+fÚG	ga	fúg
+tNÚG	ga	tnúg
+tÚG	ga	t-úg
 nÓg	ga-IE	n-óg
 nÕg	ga-IE	nõg
-nÕg	ga-IE	nõg
+nÕg	ga-IE	nõg
+ÜNİVERSITESİ	tr	üni̇versıtesi̇
+İSTANBUL	az	i̇stanbul
 KASIM	tr	kasım
 KASIM	en	kasim
 ΠΌΛΗΣ	el	πόλης
+ΠΌΣΛΗ	el	πόσλη
+ΠΌΗ	el	πόη
+ΣΣ	el	σς
 官话	zh-Hans	官话
 ภาษาไทย	th	ภาษาไทย
+資本主義	ja	資本主義
+丹麦的首都	zh	丹麦的首都