I tried the basic key 5Juu22CkB3EAaBpEcyH9dypNhDN8fZgh6Rqwwbo5jeBa6dRNoTt with replacing each character with each possible letter, e.g.:
5J1u22CkB3EAaBpEcyH9dypNhDN8fZgh6Rqwwbo5jeBa6dRNoTt <--first try
5J2u22CkB3EAaBpEcyH9dypNhDN8fZgh6Rqwwbo5jeBa6dRNoTt <-- second try
5J3u22CkB3EAaBpEcyH9dypNhDN8fZgh6Rqwwbo5jeBa6dRNoTt <-- ...
...
5Jyu22CkB3EAaBpEcyH9dypNhDN8fZgh6Rqwwbo5jeBa6dRNoTt
5Jzu22CkB3EAaBpEcyH9dypNhDN8fZgh6Rqwwbo5jeBa6dRNoTt
5Ju122CkB3EAaBpEcyH9dypNhDN8fZgh6Rqwwbo5jeBa6dRNoTt
5Ju222CkB3EAaBpEcyH9dypNhDN8fZgh6Rqwwbo5jeBa6dRNoTt
...
5Juz22CkB3EAaBpEcyH9dypNhDN8fZgh6Rqwwbo5jeBa6dRNoTt
5Juu12CkB3EAaBpEcyH9dypNhDN8fZgh6Rqwwbo5jeBa6dRNoTt
...
5Juuz2CkB3EAaBpEcyH9dypNhDN8fZgh6Rqwwbo5jeBa6dRNoTt
...
5Juu21CkB3EAaBpEcyH9dypNhDN8fZgh6Rqwwbo5jeBa6dRNoTt
...
5Juu221kB3EAaBpEcyH9dypNhDN8fZgh6Rqwwbo5jeBa6dRNoTt
...
...
5Juu22CkB3EAaBpEcyH9dypNhDN8fZgh6Rqwwbo5jeBa6dRNoT1
...
5Juu22CkB3EAaBpEcyH9dypNhDN8fZgh6Rqwwbo5jeBa6dRNoTz <-- last try
then with two letters:
5J1122CkB3EAaBpEcyH9dypNhDN8fZgh6Rqwwbo5jeBa6dRNoTt
...
5J1u12CkB3EAaBpEcyH9dypNhDN8fZgh6Rqwwbo5jeBa6dRNoTt
...
No luck!
Then tried also all toggling case combinations for up to three characters:
5Juu22CkB3EAaBpEcyH9dypNhDN8fZgh6Rqwwbo5jeBa6dRNoTt <-- basic key
5JUu22CkB3eAaBpEcyH9dypNhDN8fZgh6rqwwbo5jeBa6dRNoTt <-- example
Again ... no luck.
Finally, I tried every possible private key starting with:
Total Keys: 7*5811:232 currently tried = rougly 40 700 000 000 combinations
No luck
I think at least one answer in the document is horrible wrong.
5J1u22CkB3EAaBpEcyH9dypNhDN8fZgh6Rqwwbo5jeBa6dRNoTt <--first try
5J2u22CkB3EAaBpEcyH9dypNhDN8fZgh6Rqwwbo5jeBa6dRNoTt <-- second try
5J3u22CkB3EAaBpEcyH9dypNhDN8fZgh6Rqwwbo5jeBa6dRNoTt <-- ...
...
5Jyu22CkB3EAaBpEcyH9dypNhDN8fZgh6Rqwwbo5jeBa6dRNoTt
5Jzu22CkB3EAaBpEcyH9dypNhDN8fZgh6Rqwwbo5jeBa6dRNoTt
5Ju122CkB3EAaBpEcyH9dypNhDN8fZgh6Rqwwbo5jeBa6dRNoTt
5Ju222CkB3EAaBpEcyH9dypNhDN8fZgh6Rqwwbo5jeBa6dRNoTt
...
5Juz22CkB3EAaBpEcyH9dypNhDN8fZgh6Rqwwbo5jeBa6dRNoTt
5Juu12CkB3EAaBpEcyH9dypNhDN8fZgh6Rqwwbo5jeBa6dRNoTt
...
5Juuz2CkB3EAaBpEcyH9dypNhDN8fZgh6Rqwwbo5jeBa6dRNoTt
...
5Juu21CkB3EAaBpEcyH9dypNhDN8fZgh6Rqwwbo5jeBa6dRNoTt
...
5Juu221kB3EAaBpEcyH9dypNhDN8fZgh6Rqwwbo5jeBa6dRNoTt
...
...
5Juu22CkB3EAaBpEcyH9dypNhDN8fZgh6Rqwwbo5jeBa6dRNoT1
...
5Juu22CkB3EAaBpEcyH9dypNhDN8fZgh6Rqwwbo5jeBa6dRNoTz <-- last try
then with two letters:
5J1122CkB3EAaBpEcyH9dypNhDN8fZgh6Rqwwbo5jeBa6dRNoTt
...
5J1u12CkB3EAaBpEcyH9dypNhDN8fZgh6Rqwwbo5jeBa6dRNoTt
...
No luck!
Then tried also all toggling case combinations for up to three characters:
5Juu22CkB3EAaBpEcyH9dypNhDN8fZgh6Rqwwbo5jeBa6dRNoTt <-- basic key
5JUu22CkB3eAaBpEcyH9dypNhDN8fZgh6rqwwbo5jeBa6dRNoTt <-- example
Again ... no luck.
Finally, I tried every possible private key starting with:
| 5Juu22CkB3EAaBpEcyH9dypNhDN8fZgh6Rqwwbo5 | (11 chars missing at the end) | = 5811/232 = rougly 5 800 000 000 combinations |
| 5Juu22CkB3NAaBpEcyH9dypNhDN8fZgh6Rqwwbo5 | (11 chars missing at the end) | = 5811/232 = rougly 5 800 000 000 combinations |
| 5Juu22CkB3EAaBpEcyH9dypNhLN8oZgh6Rqwwbo5 | (11 chars missing at the end) | = 5811/232 = rougly 5 800 000 000 combinations |
| 5Juu22CkB3NAaBpEcyH9dypNhLN8oZgh6Rqwwbo5 | (11 chars missing at the end) | = 5811/232 = rougly 5 800 000 000 combinations |
| 5Juu22CkB3EAaBpEcyH9dypNhDZ8fXgh6Rqwwbo5 | (11 chars missing at the end) | = 5811/232 = rougly 5 800 000 000 combinations |
| 5Juu22CkB3NAaBpEcyH9dypNhDZ8fXgh6Rqwwbo5 | (11 chars missing at the end) | = 5811/232 = rougly 5 800 000 000 combinations |
| 5Juu22CkB3EAaBpEcyH9dypNhDN8fZgh6RQwwbo5 | (11 chars missing at the end) | = 5811/232 = rougly 5 800 000 000 combinations |
No luck
I think at least one answer in the document is horrible wrong.