:four-simple-large-colorful-bubbles-connected-with-short-thick-lines:

:simple-large-colorful-bubbles-connected-with-thick-lines:

:four-colorful-bubbles-connected-by-thick-colorful-dotted-lines:

:few-colorful-dots-with-lines-connecting-them:

:colorful-bubbles-with-lines-in-between-illustrating-data-transfer: