s=input()
a=s[ :-3 ]
b=s[ -3: ]
print(s[1:3])

print(a)
print(b)

print(a + "," + b)

i=2
c=s[:-3*i]
d=s[-3*i:]
print(c+","+d)
print(c+","+a+","+b)
for i in range(1,3):
   x,y =s[:-3*1] ,s[-3*1:]
   s=x+","+y