import time
a = 0
b = 0
c = 0
d = 0
e = 0
def add(x):
    if(x < 9):
	x = x + 1
    elif(x == 9):
	x = "a"
    elif(x == "a"):
	x = "b"
    elif(x == "b"):
	x = 0
    return x

while(True):
    time.sleep(.5)
    print a,b,c,d,e
    e = add(e)
    if(e == 0):
        d = add(d)
        if(d == 0):
	    c = add(c)
	    if(c == 0):
		b = add(b)
		if(b == 0):
		    a = add(a)