After the establishment of GTF in 1990, Grand Master Park Jung Tae added 6 patterns to the original 24 ITF patterns. These are Jee-Sang, Dhan-Goon, Jee-Goo, Jook-Am, Pyong-Hwa and Sun-Duk.
Pattern practice enables the student to go through many fundamental movements in series, to develop sparring techniques, improve flexibility of movements, master body shifting, build muscles and breath control, develop fluid and smooth motions, and gain rhythmical movements. It also enables a student to acquire certain special techniques which cannot be obtained from either fundamental exercises or sparring. In short, a pattern can be compared with a unit tactic or a word, if fundamental movement is an individual soldier's training or alphabet. Accordingly, pattern, the ledger of every movement, is a series of sparring, power, feats and characteristic beauty. Though sparring may merely indicate that an opponent is more or less advanced, patterns are a more critical barometer in evaluating an individual's technique.
While performing the patterns one should pay attention to the following points:
Pattern should begin and end at exactly the same spot. This will indicate the performer's accuracy.
Correct posture and facing must be maintained at all times.
Muscles of the body should be either tensed or relaxed at the proper critical moments in the exercise.
The exercise should be performed in a rhythmic movement with an absence of stiffness.
Movement should be accelerated or decelerated accordingly.
Each pattern should be perfected before moving to the next.
Students should know the purpose of each movement.
Students should perform each movement with realism.
Attack and defence techniques should be equally distributed among right and left hands and feet.