Always begin each CPR cycle with compressions unless is the suspected cause of cardiac arrest, then deliver prior to compressions.

It seems like your question is incomplete. However, I can provide a general answer based on the information given.

In CPR (Cardiopulmonary Resuscitation), the general rule is to start with chest compressions. This is because compressions help to pump blood and keep vital organs alive.

However, if drowning is the suspected cause of cardiac arrest, it's recommended to start with rescue breaths before chest compressions. This is because in drowning cases, the problem is primarily a lack of oxygen, so it's important to get oxygen into the body as quickly as possible.

Here's a step-by-step guide:

1. Check the scene and the person. Make sure the scene is safe for you to approach, then tap the person and shout "Are you OK?" to ensure that the person needs help.

2. Call 911 or ask someone else to do so.

3. Begin chest compressions. Place your hands one on top of the other in the middle of the chest. Use your body weight to administer compressions that are at least 2 inches deep and delivered at a rate of at least 100 compressions per minute.

4. Deliver rescue breaths. With the person's head tilted back slightly and the chin lifted, pinch the nose shut and place your mouth over the person's mouth to make a complete seal. Blow into the person's mouth to make the chest rise. Deliver two rescue breaths, then continue compressions.

5. Continue CPR steps. Keep performing cycles of chest compressions and breathing until the person exhibits signs of life, such as breathing, an AED becomes available, or EMS or a trained medical responder arrives on scene.

Note: End the cycles if the scene becomes unsafe or you cannot continue performing CPR due to exhaustion.