Sounds like a good explanation. Also, if I have two passwords AA and AB that are similar to each other, then, if I use only AA for a while, I easily forget AB,

Sounds like a good explanation. Also, if I have two passwords AA and AB that are similar to each other, then, if I use only AA for a while, I easily forget AB, or start including parts of AA in AB. — Is there a word for this? For forgetting and messing/mixing up things, because they are too similar to each other