Words in Triangle Pattern

The program must accept a string S with spaces as the input. The program must print the desired pattern as shown in the Example Input/Output section.

Boundary Condition(s):
2 < Length of 5 <= 100

Input Format:
The first line contains S.

Output Format:
The lines contain the desired pattern as shown in the Example Input/Output section.

Example Input/Output 1:
Input
Very Useful One
Output
V
Ve
Ver
Very
U
Us
Use
Usef
Usefu
Useful
O
On
One

Example Input/Output 2:
Input:
skill is power
Output
s
sk
ski
skil
skill
i
is
P
po
pow
powe
power

s= input().split()

for i in s:
x=1
for l in i:
print(l[0:x])
x+=1