🚧 This article is a work in progress and is incomplete at this time.
The bottom line for your 4th PC is that you'll have 4 leftover minos from your previous bag and 1 mino on hold. The hold mino can be any mino, but frequently, it will also be from your last bag.
These are some patterns that you can use for your 4th PC with the 5 minos that you'll have, under the assumption that they're all from your previous bag. The credit to patterns shown here goes to JimothyJimothy and cosin307.