儼

亻 = 丿 + 丨 : Mnemonic symbol: Rosa Luxemburg. She's quite radical, and her name starts with "r", just like "ren2". Also, 亻appears at the left-hand side of characters, and Rosa is a leftist as well.

Robinson Crusoe (r) and Rosa Luxemburg (亻) are having their favorite snacks in the encampment's kitchen: Rosa is eating a banana (丿) and Robinson is eating a dinosaur bone (丨).

严 = 亚 + 厂 : Mnemonic symbol: a tightly sealed bottling jar. Just inside the anthill's kitchen, Maud Younger is working on her top secret project. On a table she's got a sealed bottling jar of Mapo Doufu and a still packaged and sealed chocolate factory. She plans to modify the chocolate factory to produce Mapo Doufu, to sell the food world wide.

严 = 亚 + 厂 : Mnemonic symbol: a tightly sealed bottling jar. Just inside the anthill's kitchen, Maud Younger is working on her top secret project. On a table she's got a sealed bottling jar of Mapo Doufu and a still packaged and sealed chocolate factory. She plans to modify the chocolate factory to produce Mapo Doufu, to sell the food world wide.