# n_suffix.py

# n_suffix.py

def n_suffix(n):
    if n:
        print n % 10
        suffix = "th"
        if n < 4 or (n > 20 and n%10 in [1,2,3]):
            suffix = ["st", "nd", "rd"][n%10-1]
        return str(n)+suffix
#
for z in range(50): print n_suffix(z)