Many cross-country obstacles have several possible routes to take (for example, at obstacle 5 there may be 2 A, 2 B, and 2 C elements), with one route usually being faster but requiring a more skillful ride or more physical effort from the horse. A rider may take any of the possible routes as long as they pass over each letter once. Additionally, after a refusal, they may jump a different obstacle of the same letter in place of the original.