diff --git a/TaskE04/run.py b/TaskE04/run.py
new file mode 100644
index 0000000..4cdc41c
--- /dev/null
+++ b/TaskE04/run.py
@@ -0,0 +1,13 @@
+import re
+
+def analyze_line(line):
+    phone_pattern = re.compile(r'^555-\d{3}-\d{3}$|^555\s\d{3}\s\d{3}$')
+
+    if phone_pattern.match(line):
+        print('yes')
+    else:
+        print('no')
+
+with open('test.in', 'r') as file:
+    for line in file:
+        analyze_line(line.rstrip())
\ No newline at end of file
diff --git a/TaskE04/test.in b/TaskE04/test.in
index 73010fc..b83bfef 100644
--- a/TaskE04/test.in
+++ b/TaskE04/test.in
@@ -10,3 +10,5 @@
 556 345 667
 556 345 6675
 556 345-667
+555 555 555
+555 555 555
\ No newline at end of file
diff --git a/TaskE11/run.py b/TaskE11/run.py
new file mode 100644
index 0000000..6ffbe7c
--- /dev/null
+++ b/TaskE11/run.py
@@ -0,0 +1,28 @@
+import re
+
+def check_divisibility(line):
+    # Sprawdzanie, czy napis jest zapisany dziesiętnie i czy jest podzielny przez 4
+    decimal_pattern = re.compile(r'^0$|^[1-9][0-9]*$')
+    if decimal_pattern.match(line) and int(line) % 4 == 0:
+        return 'yes'
+    
+    # Sprawdzanie, czy napis jest zapisany szesnastkowo i czy jest podzielny przez 4
+    hex_pattern = re.compile(r'^0x[1-9A-F]+$|^0x0$')
+    if hex_pattern.match(line) and int(line, 16) % 4 == 0:
+        return 'yes'
+    
+    return 'no'
+
+def main(file_path):
+    try:
+        with open(file_path, 'r') as file:
+            for line in file:
+                line = line.rstrip('\n')
+                result = check_divisibility(line)
+                print(result)
+    except FileNotFoundError:
+        print(f'File "{file_path}" not found.')
+
+
+file_path = 'test.in'
+main(file_path)
diff --git a/TaskE42/run.py b/TaskE42/run.py
new file mode 100644
index 0000000..5125d46
--- /dev/null
+++ b/TaskE42/run.py
@@ -0,0 +1,13 @@
+import re
+
+def sprawdz_napis(napis):
+    warunek = re.compile(r'^NI+E{6,}!{3,}|^N+O{6,}!{3,}')
+    if warunek.match(napis):
+        print('yes')
+    else:
+        print('no')
+
+with open('test.in', 'r') as plik:
+    for linia in plik:
+        linia = linia.rstrip('\n')
+        sprawdz_napis(linia)
diff --git a/TaskE44/run.py b/TaskE44/run.py
new file mode 100644
index 0000000..292c1d8
--- /dev/null
+++ b/TaskE44/run.py
@@ -0,0 +1,18 @@
+import re
+
+def analizuj_wiersze(plik):
+    with open(plik, 'r', encoding='utf-8') as file:
+        for line in file:
+            line = line.rstrip()  
+            regex = r'^([A-ZĆŁÓŚŹŻ][a-ząćęłńóśźż]*a)\s([A-ZĆŁÓŚŹŻ][a-ząćęłńóśźż]{1,})$'
+            match = re.match(regex, line)
+            if match:
+                imie, nazwisko = match.groups()
+                if not re.match(r'^(Kosma|Jarema)$', imie):
+                    print(nazwisko)
+                else:
+                    print("<NONE>")
+            else:
+                print("<NONE>")
+
+analizuj_wiersze("test.in")