ans=[-1]*10
for i in range(10):
    t= [str(i) for _ in range(10)]
    print(''.join(t),flush=True)
    x,s=input().split()
    if s == 'unlocked':
        exit()
    x=int(x)
    for j in range(10):
        t[j] = str((i+1)%10)
        print(''.join(t),flush=True)
        y,s=input().split()
        if s == 'unlocked':
            exit()
        y=int(y)
        
        if x>y:     
            ans[j] = str(i)
        x = y

            
# print(ans)            
print(''.join(ans),flush=True)
z,s=input().split()