The most popular image associated with kata is that of a karate practitioner performing a series of punches and kicks in the air. The kata are executed as a specified series of approximately 20 to 70 moves, generally with stepping and turning, while attempting to maintain perfect form. There are perhaps 100 kata across the various forms of karate, each with many minor variations. The number of moves in a kata may be referred to in the name of the kata, e.g., "Gojū Shiho", which means "54 steps." The practitioner is generally counselled to visualize the enemy attacks, and his responses, as actually occurring, and "karateka" are often told to "read" a kata, to explain the imagined events. Kata can contain techniques beyond the superficially obvious ones. The study of the meaning of the movements is referred to as the bunkai, meaning analysis, of the kata.