to memorize the following

Macronutrients: Carbon, Oxygen, Hydrogen, Nitrogen, Potassium, Calcium, Phosphorus, Magnesium, Sulfur

Micronutrients: Iron, Chlorine, Copper, Manganese, Zinc, Molybdenum, Boron

can be 2 mnemonic devices or 1

+rep? it'd be really helpful T___T