⚪⚫⬜⬛

#nonspecific #generic #general #default #undefined shapes #placeholders

🤔➕❓

#variables #placeholders #adding unknowns #abstract addition

🇪➕🇫

#variables #e plus f #placeholders

🇽Ψ※

#variables #placeholders #symbolic notation #mixed characters #non-standard letters

𝑥𝑛

#x and n #math variables #algebra #sretemarap #placeholders #tuple #coordinates

🍎➡️⭐➡️☀️➡️🏠➡️🏠

#five items #ARSHH #placeholders #distinct items

⭐❓⚡️🤔🤔

#abstract sequence #five items #ARSHH #placeholders #unknown meaning

⚫️⚪️▪️❓

#generic items #placeholders #abstract objects #unspecified things #doodads #thingamajigs

[A][G][B]

#agb #placeholders