I can write upper case letter H
I can write lowercase letter h

Uppercase!

H - H - Horse
H - H - Heart
H - H - Hammer
H - H - Hug

Oh! I know so many words
That begin with letter F

Lowercase!

h - h - horse
h - h - heart
h - h - hammer
h - h - hug

Oh! I know so many words
That begin with letter H