Two.
2
4 sylablles
the word rotating has 3 sylablles
The word "began" has two syllables.
There is only one syllable in green.
Flutter has two syllables.
2
one syllable.
She felt her heart flutter when he waved.
I can flutter like a bird. Can you make your arms flutter like birds' wings?
There is one syllable in 'splash'.
Mer-cu-ti-o has 4 syllables.