class A:
 def a1(self):
     print("Hello")
class B(A):
 def b1(self):
     print("I am harminder")
 def a1(self):
     print("Hi")
class C(B):
 def c1(self):
     print("byee")
c=C()
c.a1()
c.b1()
c.c1()
print("//////////////////////////////////")
class A:
 def a1(self):
     print("Hello")
class B:
 def b1(self):
     print("I am harminder")
class C(A,B):
 def c1(self):
     print("HW r uh")
class D(C):
 def d1(self):
     print("Bye")
d=D()
d.a1()
d.b1()
d.c1()
d.d1()

2c1f5a42767684535c9d99c50378e7b7bc915274
<mask token>


class B:

    def b1(self):
        print('I am harminder')


class C(A, B):

    def c1(self):
        print('HW r uh')


class D(C):

    def d1(self):
        print('Bye')


<mask token>

<mask token>


class B(A):

    def b1(self):
        print('I am harminder')

    def a1(self):
        print('Hi')


class C(B):

    def c1(self):
        print('byee')


<mask token>


class A:

    def a1(self):
        print('Hello')


class B:

    def b1(self):
        print('I am harminder')


class C(A, B):

    def c1(self):
        print('HW r uh')


class D(C):

    def d1(self):
        print('Bye')


<mask token>

class A:

    def a1(self):
        print('Hello')


class B(A):

    def b1(self):
        print('I am harminder')

    def a1(self):
        print('Hi')


class C(B):

    def c1(self):
        print('byee')


<mask token>


class A:

    def a1(self):
        print('Hello')


class B:

    def b1(self):
        print('I am harminder')


class C(A, B):

    def c1(self):
        print('HW r uh')


class D(C):

    def d1(self):
        print('Bye')


<mask token>

class A:

    def a1(self):
        print('Hello')


class B(A):

    def b1(self):
        print('I am harminder')

    def a1(self):
        print('Hi')


class C(B):

    def c1(self):
        print('byee')


<mask token>
c.a1()
c.b1()
c.c1()
print('//////////////////////////////////')


class A:

    def a1(self):
        print('Hello')


class B:

    def b1(self):
        print('I am harminder')


class C(A, B):

    def c1(self):
        print('HW r uh')


class D(C):

    def d1(self):
        print('Bye')


<mask token>
d.a1()
d.b1()
d.c1()
d.d1()

class A:
 def a1(self):
     print("Hello")
class B(A):
 def b1(self):
     print("I am harminder")
 def a1(self):
     print("Hi")
class C(B):
 def c1(self):
     print("byee")
c=C()
c.a1()
c.b1()
c.c1()
print("//////////////////////////////////")
class A:
 def a1(self):
     print("Hello")
class B:
 def b1(self):
     print("I am harminder")
class C(A,B):
 def c1(self):
     print("HW r uh")
class D(C):
 def d1(self):
     print("Bye")
d=D()
d.a1()
d.b1()
d.c1()
d.d1()
