BUTTERFLY

• 1A: Used alternating (flutter) kick instead of dolphin kick.
• 1B: Used breaststroke-type kick.
• 1C: Used scissors kick.
• 1E: Arms were not simultaneous.
• 1F: Recovered arms underwater (must recover over the water).
• 1J: Touched with only one hand (at turn or finish).
• 1K: Hands were not separated at the touch.
• 1L: Hands touched non-simultaneously.
• 1M: Did not touch the wall at turn or finish.
• 1N: Body was not oriented toward the breast when leaving the wall (shoulders not past vertical).
• 1P: Head did not break the surface by the 15-meter mark (after start or turn).
• 1R: Re-submerged before the 15m mark or improperly.
• 1T: Other butterfly violation.

BACKSTROKE

• 2A: Did not touch the wall at the turn.
• 2B: Past vertical at turn and delayed initiating arm pull.
• 2C: Past vertical at turn and delayed initiating the turn.
• 2D: Took multiple strokes past vertical at the turn.
• 2E: Toes curled over the lip of the gutter after the start.
• 2F: Head did not break the surface by the 15-meter mark.
• 2G: Re-submerged (after breaking surface).
• 2H: Not on back when leaving the wall (after turn).
• 2L: Shoulders past vertical toward the breast during the swim.
• 2T: Other backstroke violation.

BREASTSTROKE

• 3A: Used alternating kick.
• 3B: Used butterfly (downward) kick.
• 3C: Used scissors kick.
• 3D: Brought arms past the hipline (after the first pull).
• 3E: Arms were not simultaneous.
• 3G: Took more than one arm stroke underwater (two strokes under).
• 3H: Recovered elbows over the water.
• 3J: Touched with only one hand.
• 3K: Hands were not separated at the touch.
• 3L: Touched non-simultaneously.
• 3M: Did not touch the wall.
• 3N: Body was not oriented toward the breast when leaving the wall.
• 3P: Performed kick before pull in the stroke cycle.
• 3R: Head was not up before hands turned inward (at the widest part of the second pull).
• 3S: Double pulls or double kicks in the cycle.
• 3T: Other breaststroke violation.

FREESTYLE

• 4A: Did not touch the wall at the turn.
• 4B: Head did not break the surface by the 15-meter mark.
• 4C: Re-submerged.

INDIVIDUAL MEDLEY (IM)

• 5A1: Stroke infraction on the butterfly leg.
• 5A2: Stroke infraction on the backstroke leg.
• 5A3: Stroke infraction on the breaststroke leg.
• 5A4: Stroke infraction on the freestyle leg.
• 5B: Strokes were swum out of sequence.
• 5C: Fourth leg (freestyle) was swum in the style of the previous stroke.

RELAYS

• 6A / 6B / 6C / 6D: Stroke infraction by swimmer #1 / #2 / #3 / #4.
• 6F / 6G / 6H: Early take-off by swimmer #2 / #3 / #4.
• 6L1–6L4: Changed order of swimmers (#1–4).
• 6T: Other relay violation.

MISCELLANEOUS / GENERAL

• 7A: False start.
• 7B: Declared false start.
• 7C: Did not finish the race.
• 7D: Delay of the meet.
• 7T: Other miscellaneous violation (unsportsmanlike conduct, interference, walking on the bottom in non-freestyle events, etc.).