Bobbing the head

Excessive upward head tilt

Burying the head

Squirming

Bouncing

under-rotation

over-rotation

Uneven rotation

Disjointed rotation

Sputter kick non-continuous

Breaststroke feet

Split kick

Kicking air

Lack of extension on entry

Dominant entry arm

Pausing at the point of entry

Over-entry (crossover)

under-entry

Asymmetrical entry

Dominant pulling arm

No catch

Late catch

Straight arm pull

Lack of extension on finish

Lack of acceleration through the finish

Pausing at the point of finish

Asymmetrical recovery

over-breathing

Asymmetrical breathing

Dropping the lead arm during the breath

Breathing backward (as opposed to sideways)

Early breathing

Late breathing

Failure to exhale underwater

Pausing during breath

Irregular timing of the stroke

No chest press

Minimal chest press

Excessive chest press

Swimming more vertical than horizontal

An asymmetrical kick

No kick

One kick per stroke

An incomplete kick

Mini-breast kicks

Inadequate knee bend on either kick

Flutter kick

An asymmetrical arm cycle

Pulling with fingers apart

An oversized outsweep

Diving down at the point of entry

Entering inside shoulder width

Entering short with elbows bent

No catch

Late catch

Pulling with straight arms

Pulling outside the body width from start to finish

Lack of acceleration through the pull

Finishing short

An  asymmetrical recovery

Bent arm recovery

Palm-down recovery

Dragging the arms through the recovery

Holding the breath, failure to exhale underwater

Breathing too late

(Exaggerated)  driving the head down as the arms finish

Lifting the head to breath

Entering the hands before the head

Pausing the arms at the finish

Kicking twice at the point of entry

Pausing at the point of entry

A disjointed stroke