LWW system:

Bacteria - 9 groups.

Group 1: Gram-positive cocci

Group 2: Gram-positive bacilli/rod

Group 3: Gram-negative cocci

Group 4: Gram-negative bacilli/rod

Group 5: Anaerobic organisms

Group 6: Spirochetes

Group 7: Mycoplasma

Group 8: Chylamydia

Group 9: Others