Indicate the Proper Order of the Events During the Cardiac

Indicate the proper order of the events during the cardiac cycle by placing numbers in the blanks preceding the events in sequence.The first and last events are already indicated as a guide.
1__ AV valve open; aortic valve closed; ventricular filling occurring
_____ blood ejected from the ventricle
_____ isovolumetric ventricular relaxation
_____ atrial contraction
_____ aortic valve opens
_____ SA node discharges
_____ ventricular filling complete
_____ ventricular relaxation begins
_____ aortic valve closes
_____ isovolumetric ventricular contraction
_____ ventricular contraction begins; AV valve closes
_12__ AV valve opens; ventricular filling occurs again; one cardiac cycle is complete