text: for i in range(10000000):
      str_i = str(i)
      s1 = 'ABCDEFH' + str_i
      s2 = '123456789' + str_i
      result = ''
      x = 0
      if len(s1) < len(s2):
          while x < len(s1):
              result += s1[x] + s2[x]
              x += 1
          result += s2[x:]
      else:
          while x < len(s2):
              result += s1[x] + s2[x]
              x += 1
          result += s1[x:]
  
      if i == 0: print(result)
  