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Suppose you really like dogs and so wanted to have a bitcoin address with the letters...

Suppose you really like dogs and so wanted to have a bitcoin address with the letters “dog” in that order in the first 4 digits of the hash (excluding the prefix). That is, you don’t mind if there is at least one other letter that isn’t part of that string. So for example, the strings “doge”, “adog” and “doag” would all be fine. However, the letters of “dog” do have to be in order, so “dgoa” would not work. How many addresses would you have to generate on average before finding a valid address?

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since letter of dog do have to be in ordes. d will come befor o and g always. 0 will come after d but befor galways.

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