Which rhyme scheme is used in this first stanza of "Ricuerdo"?

[1)
We were very tired, we were very merry-We had gone back and forth all night on the ferry;
It was bare and bright, and smelled like a stable-But we looked into a fire, we leaned across a table, We lay on a hill-top underneath the moon,
And the whistles kept blowing and the dawn came soon.
(1 point)
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