choose the same jump or a different double, triple, or quadruple jump, but when they execute a quadruple jump to fulfill their quadruple or triple jump requirement (#2), they can include a different quadruple jump in their jump combination. Senior women and junior men and women can include either the same jump or a different double or triple jump in their combination jump. If a skater executes an extra jump or jumps, "only the individual jump(s) which is not according to requirements will have no value". Jumps are judged in the order of their execution. A skater will not get any credit for spins "if there is no spin position before and/or after the change of foot" and if it does not have at least three revolutions. Only flying spins can begin with a jump. Seniors can choose to execute any type of flying spin with a landing position different from the spin in one position, but juniors can only execute the prescribed type of flying spin. When awarding the grade of execution for a flying spin, judges must ascertain whether or not skaters performed a step-over while executing it. Only eight revolutions in the landing position can be different from the flying position. No previous rotation can be done before the skater takes off for the flying spin and the "required eight revolutions can be executed in any variation of the landing position". Both senior and junior men can execute their spins with only one change of foot, but senior men must choose to execute either the sit position or camel position of their chosen spin and this position must be different from the landing position of their flying spin. The ISU also requires that "[t]he spin must consist of only one change of foot, which may be executed in the form of a step over or a jump with not less than six revolutions on each foot in the chosen basic position". Junior men can only perform the prescribed camel or sit position and the spin must have only one change of foot, which can be done in either the form of a jump with no fewer than six revolutions on each foot in the basic position they have chosen or in the form of a step-over. When women single skaters execute a layback- or sideways-leaning spin, they can assume any position they like, but only if "the