What are the five rules of the butterfly stroke? The swimmer must touch the wall with both hands simultaneously at the end of each length; The sw...

What are the five rules of the butterfly stroke?


The swimmer must touch the wall with both hands simultaneously at the end of each length; The swimmer must keep both arms moving simultaneously and in the same horizontal plane; The swimmer must keep his legs together and move them simultaneously up and down; The swimmer must keep his face in the water except when taking a breath; The swimmer must touch the wall with both hands simultaneously at the start and at the end of the race.
The swimmer must touch the wall with both hands simultaneously at the end of each length; The swimmer must keep both arms moving simultaneously and in the same vertical plane; The swimmer must keep his legs together and move them simultaneously up and down; The swimmer must keep his face in the water except when taking a breath; The swimmer must touch the wall with both hands simultaneously at the start and at the end of the race.
The swimmer must touch the wall with both hands simultaneously at the end of each length; The swimmer must keep both arms moving alternatively and in the same horizontal plane; The swimmer must keep his legs together and move them alternatively up and down; The swimmer must keep his face in the water except when taking a breath; The swimmer must touch the wall with both hands simultaneously at the start and at the end of the race.