A bicycle combination lock has four rings with numbers 0 through 9. Given the actual numbers and the combination to unlock, print instructions to unlock the lock using the minimum number of twists. A “twist up” increases the number value of a ring, and a “twist down” decreases it. For example, if the actual number shown is 1729 and the desired combination is 5714, write your instructions like this:

Ring 1: Twist up 4 times Ring 3: Twist down once Ring 4: Twist up or down 5 times