Interesting repeat puzzle position (king and pawn ending)

I filtered the Lichess puzzle database for Mate in 4 puzzles with rating >=1600 and 7 or fewer pieces, for blindfold practice. I was intrigued to find the same position four times; perhaps others will find this interesting as well. https://lichess.org/training/R2hlk https://lichess.org/training/RV2C6 https://lichess.org/training/SFwVc (colors reversed + mirror image) https://lichess.org/training/pmzA3