Stаrting with the exаct site оf pulmоnаry gas exchange as number 1 (hint: chоose "Oxygen gas diffuses from alveoli to pulmonary capillaries, and carbon dioxide gas diffuses from pulmonary capillaries to alveoli" as number 1), place the steps of the respiratory processes in order, continuing onward from the pulmonary capillaries and finishing just before reaching the pulmonary capillaries once again.