tier chart (2)
hierarhiaskeem; kihtskeem
= tier diagram
näiteid
https://external-content.duckduckgo.com/iu/?u=https%3A%2F%2Ftse3.mm.bing.net%2Fth%3Fid%3DOIP.n4QwnpeQKlXfUcIm5IDf-AHaDF%26pid%3DApi&f=1
https://external-content.duckduckgo.com/iu/?u=https%3A%2F%2Ftse2.mm.bing.net%2Fth%3Fid%3DOIP.vDwqQBgdxbMIHg-gG8rMFAHaCq%26pid%3DApi&f=1
https://duckduckgo.com/?t=h_&q=%22tier+diagram%22&iax=images&ia=images