s=['0']*10
for i in range(10):
  a=[()]*10
  for j in range(10):
    s[i]=str(j)
    print(''.join(s),flush=True)
    x,res=input().split()
    if res=='unlocked':
      exit(0)
    a[j]=(x,str(j))
  a.sort()
  if a[0][0]!=a[1][0]:
    s[i]=a[0][1]
  else:
    s[i]=a[-1][1]