Here's a little Python script to analyze the diff as we change one character at a time from the baseline AAAAAAAA:
#!/usr/bin/env python
baseline = "zW||BRpsa'�j|p^Ud'Ewjp]['SPrfpuOefQ{eVUeXdKvBeZSWqPxBeZSWqhxvep][fDrqpYO_eAuipzTqZE|Bd'R[f}{|pdNW^H"
responses = {
"BAAAAAAA": u"{X}}CSqtbaAk}q_VeaFxkq^\aTQsgqvPfgR|fWVfYeLwCf[TXrQyCf[TXriywfq^\gEsrqZP'fBvjq{Ur[F}CeaS\g~|}qeOX_I",
"ABAAAAAA": u"zX}}CSqtaaAk}q_VdaFxkq^'TQsgqvPegR|fWVfXeLwCf[TWrQyCf[TWriywfq^[gEsrqZP_fBvjq{Uq[F}CeaS[g~|}qeOW_I",
"AABAAAAA": u"zW}}CSqta'Ak}q_Vd'Fxkq^'SQsgqvPefR|fWVfXdLwCf[TWqQyCf[TWqiywfq^[fEsrqZP_eBvjq{UqZF}CeaS[f~|}qeOW^I",
"AAABAAAA": u"zW|}CSqta'�k}q_Vd'Exkq^'SPsgqvPefQ|fWVfXdKwCf[TWqPyCf[TWqhywfq^[fDsrqZP_eAvjq{UqZE}CeaS[f}|}qeOW^H",
"AAAABAAA": u"zW||CSqta'�j}q_Vd'Ewkq^'SPrgqvPefQ{fWVfXdKvCf[TWqPxCf[TWqhxwfq^[fDrrqZP_eAujq{UqZE|CeaS[f}{}qeOW^H",
"AAAAABAA": u"zW||BSqta'�j|q_Vd'Ewjq^'SPrfqvPefQ{eWVfXdKvBf[TWqPxBf[TWqhxvfq^[fDrqqZP_eAuiq{UqZE|BeaS[f}{|qeOW^H",
"AAAAAABA": u"zW||BRqta'�j|p_Vd'Ewjp^'SPrfpvPefQ{eVVfXdKvBe[TWqPxBe[TWqhxveq^[fDrqpZP_eAuip{UqZE|BdaS[f}{|peOW^H",
"AAAAAAAB": u"zW||BRpta'�j|p^Vd'Ewjp]'SPrfpuPefQ{eVUfXdKvBeZTWqPxBeZTWqhxvep^[fDrqpYP_eAuipzUqZE|Bd'S[f}{|pdOW^H"
}
for codeword in sorted(responses):
response = responses[codeword]
diffs = ["*" if c1 == c2 else "_" for (c1, c2) in zip(response, baseline)]
print(f'{codeword}: {"".join(diffs)}')
The output:
blake@bfdesktop ~ $ python analyze_diff.py
AAAAAAAB: *******_*******_*******___________________________________________________________________________
AAAAAABA: ******__******__******_______________*____________________________________________________________
AAAAABAA: *****___*****___*****________________*______________________________*_____________________________
AAAABAAA: ****____****____****_________________*_____________________________**_____________________________
AAABAAAA: ***_____***_____***__________________*_____________________________**_____________________________
AABAAAAA: **______**______**___________________*_____________________________**_____________________________
ABAAAAAA: *_______*_______*____________________*_____________________________**_____________________________
BAAAAAAA: _____________________________________*_____________________________**_____________________________
Each asterisk shows what positions are unchanged when we changed one character from A to B. I need to sign off for a while, but this will run with Python 3.6 if anyone else wants to mess with it.