def triangleWord() :
    word = input("enter a long word: ")
    for  i in range(len(word)+1) :
        print(word[0:i])

def trapezoidWord() :
    word = input("enter a long word: ")
    start = int(input("how long should the first substring be?: "))
    end = int(input("how long should the last substring be?: "))
    if end > len(word) :
        print("the word isn't that long! going up to maximum: ", len(word))
        end = len(word)
    for i in range(start, end+1) :
        print(word[0:i])

triangleWord()
print("---------------------")
trapezoidWord()