>it's better to split concepts into cards as atomically as possible, Yes, but all the "conversions" do represent the same concept. So, it should be (i believe) learnt as a whole thing. It is not too hard, and greatly reduces a number of cards. And how would you distinguish between "front" sides of cards for "te klama" and "te muvdu" and "se cliva", for example? -- mu'o mi'e lex