In puzzle #67 there are approximately 1024 keys that start with that prefix (approximately), statistically every 2**56 bits it is repeated, so if you want to find another pattern you should subtract or add 2**56 to the private key of this one and look near that result, among one of those 1024 ranges, is the desired private key (probably), then what I would do is discard the 2**56 before and after that pattern because it is unlikely to be there.

this is pure statistics, but it is not crazy to try, as Einstein said "Insanity is doing the same thing over and over again and expecting different results."