xx=list(input())
k=len(a)

for i in range(0,k,2):
    temp=xx[i]
    xx[i]=xx[i+1]
    xx[i+1]=temp
print("".join(xx))
    

47e59ecf389f613acd99a77143d5a0826da12c2a
<mask token>

<mask token>
for i in range(0, k, 2):
    temp = xx[i]
    xx[i] = xx[i + 1]
    xx[i + 1] = temp
print(''.join(xx))

xx = list(input())
k = len(a)
for i in range(0, k, 2):
    temp = xx[i]
    xx[i] = xx[i + 1]
    xx[i + 1] = temp
print(''.join(xx))

xx=list(input())
k=len(a)

for i in range(0,k,2):
    temp=xx[i]
    xx[i]=xx[i+1]
    xx[i+1]=temp
print("".join(xx))
    
