1)
string = "string"
print(len(string.split()))
2)
string = "string"
print(string[0].upper() + string[1:].lower())
3)
string = "string"
char = input()
answer = len([ch for ch in string.split() if ch[-1] == char])
print(answer)
4)
string = "string"
answer = [ch for ch in string.split() if ch[0] == ch[-1]]
print(', '.join(answer))
5)
string = "string"
word = input()
print(string.count(word))
