def output_diagonal(text, k):
    if len(text) % k != 0:
        text += " " * (k-(len(text) % k))
    
    for i in range(k):
        line = " " * i
        for j in range(len(text)//k):
            line += text[j*k + i]
            line += " " * (k-1)
        print(line.rstrip())

output_diagonal("abcdABCD1234568...uuu",5)