Starting an error with a bang

0:00 0:50 1:40 2:30 3:20 4:10 5:00 5:50 6:40 7:30 8:20 9:10 10:00 10:50 11:40 12:30 13:20 14:10 15:00 15:50 16:40 17:30 18:20 19:10 20:00 20:50 21:40 22:30 23:20 24:10 25:00 25:50 26:40 27:30 28:20 29:10 30:00 30:50 31:40 32:30 33:20 34:10 35:00 35:50 36:40 37:30 38:20 39:10 40:00 40:50 41:40 42:30 43:20 44:10 45:00 45:50 46:40 47:30 48:20 49:10 50:00 50:50 51:40 52:30 53:20 54:10 55:00 55:50 56:40 57:30 58:20 59:10 1:00:00 1:00:50 1:01:40 1:02:30 1:03:20 1:04:10 1:05:00 1:05:50 1:06:40 1:07:30 1:08:20 1:09:10 1:10:00 1:10:50 1:11:40 1:12:30 1:13:20 1:14:10 1:15:00 1:15:50 1:16:40 1:17:30 1:18:20 1:19:10 1:20:00 1:20:50 1:21:40 1:22:30 1:23:20 1:24:10 1:25:00 1:25:50 1:26:40 1:27:30 1:28:20 1:29:10 1:30:00 1:30:50 1:31:40 1:32:30 1:33:20 1:34:10 1:35:00 1:35:50 1:36:40 1:37:30 1:38:20 1:39:10 1:40:00 1:40:50 1:41:40 1:42:30 1:43:20 1:44:10 1:45:00 1:45:50 1:46:40 1:47:30 1:48:20 1:49:10 1:50:00 1:50:50 1:51:40 1:52:30 1:53:20 1:54:10 1:55:00 1:55:50 1:56:40 1:57:30 1:58:20 1:59:10 2:00:00 2:00:50 2:01:40 2:02:30 2:03:20 2:04:10 2:05:00 2:05:50 2:06:40 2:07:30 2:08:20 2:09:10 2:10:00 2:10:50 2:11:40 2:12:30 2:13:20 2:14:10 2:15:00 2:15:50 2:16:40