While away in Greece last year I met more then a few relatives I wasn't even aware I had. I was there for 3 months, and have had many a aunt, great aunt, 2nd uncle something or other try and explain the concept in this chart to me. While I have no doubt they stated (over & over) their cases clearly, It wasn't until I found this chart (just now) I really had no fucking clue what any of them were babbling on about (hey, its all greek to you amirite?hrmf). See attached:
