What are the names of freestyle wrestling? Be specific.

Similar to greco-Roman wrestling. From standing, you can hold your head and neck, trunk, upper and lower limbs, and trip with your legs, but you are not allowed to grab wrestling clothes, and you are not allowed to use anti-joint and suffocation actions until you fall to the ground with your shoulders. Freestyle wrestling rose in Europe and America at the end of 18 and the beginning of 19, and finally took shape in Britain. Since the 3rd Olympic Games, freestyle wrestling has been listed as an Olympic event. 1950 The International Amateur Wrestling Federation decided to hold the World Greco-Roman Wrestling and Freestyle Wrestling Championships or tournaments. American freestyle wrestling has a fine tradition, characterized by great strength and good endurance. Turkey's freestyle wrestling has a national tradition, and it is mostly won by physical strength. Soviet and Bulgarian athletes are highly skilled. Athletes from Iran, Japan, Mongolia, North Korea and other countries are flexible and skilled. Freestyle wrestling techniques include not only classical wrestling techniques, but also the action of holding the opponent's lower limbs with arms and the method of tripping with legs. When standing and falling, the main attack and defense method of modern freestyle wrestling standing technology is to hold one or more legs of the opponent and throw him down. After holding each other's head, neck, trunk or limbs, there are many ways to trip each other's legs and feet with your legs, such as holding your arms and legs and hooking them inside. There are also riding and entanglement of hands and feet in kneeling support, which is the most widely used and threatening attack method. In the past, there was no hierarchy in competition. Since 1904, the freestyle wrestling competition in the third Olympic Games has been graded according to weight. At present, children (13 ~ 14 years old) and adolescents (15 ~ 16 years old) are classified into 13 grades, and adolescents (17 ~/kl). Now a game is divided into two games, each of which is 3 minutes, and the rest time between the two games is 1 minute. Teenagers and children's groups play for 2 minutes each time. The official competition will be held on the platform with the height not exceeding 1 10 cm. The platform is covered with 12m× 12m thick sponge pad of 8 ~ 10cm. Draw a circle with a diameter of 7 meters in the center of the mat as the competition area, draw a red circle with a diameter of 1 m in the center of the competition area, and there is a red negative area with a width of 1 m outside the competition area. There is a 1.5m protected area outside the passive area. Athletes wear red or blue wrestling clothes and high-waisted soft-soled wrestling shoes. There are three referees in each game. The referee on the court is dressed in white, with a red armband on his left arm and a blue armband on his right arm. They perform referee tasks on the court, evaluate scores and announce the victory or defeat. The judges and referees sit on opposite sides of the stage, and are responsible for grading and recording scores. In the competition, one player makes the other player's two shoulder blades land at the same time, and there is an obvious pause time (1 sec), that is, it is judged as a victory of landing on both shoulders, and the competition is over. If there is no "landing on both shoulders" in the competition, it will be scored according to the attack methods used by the athletes of both sides, and the one with more points will win. Each attack mode can be rated as 1, 2 or 4 according to its quality and effect. In order to escape from the battle, athletes deliberately delay the competition time, which is called "negative" standing and falling. Athletes should step into the negative area and automatically return to the competition area, otherwise it will be judged as "negative". If one foot enters the protected area, both sides should stop the game immediately. Referees should remind athletes when they are negative. If the reminder is invalid and continues to be negative, punishment will be imposed (the negative athlete kneels, and the other athlete takes an offensive posture, but his palm should be flat on the back of the athlete below, and both sides can attack or counterattack after the referee blows the whistle). If it is still negative, let it stand up, and if it is negative, it will be disqualified. Do not hit your opponent, do not hit or kick your opponent with your hands, elbows, knees and head, do not grab clothes or pull your hair, do not press your face or throat between your opponent's eyebrows and eyes, and do not use anti-joint movements. The competition is divided into preliminaries and finals. The preliminaries are arranged in the order of drawing lots. Odd numbers are group A and even numbers are group B. Each round of trumpet matches the nearest tuba, and if you lose two games, you will be eliminated. Group ranking depends on the scores won. The top three in each group will participate in the finals: 1 in each group will compete for 1 and 2 in the finals, and so on.