num = 0
numt = 0
for i in range(97,123):
    print(chr(i),end='')
    num += 1
    if num == 13:
       print()
print()
for j in range(122,96,-1):
    print(chr(j),end='')
    numt += 1
    if numt == 13:
       print()
/**************************************************************
	Problem: 1093
	User: admin
	Language: Python
	Result: Runtime Error
****************************************************************/