And a Partridge, une Perdrix

"On the first day of Christmas, my true love gave to me / a partridge in a pear tree."

"On the second day of Christmas, my true love gave to / two turtle doves and a partridge in a pear tree."

$\vdots$

"On the twelfth day of Christmas, my true love gave to me

• 12 drummers drumming
• 11 pipers piping
• $\ \ \ \ \vdots$
• 2 turtle doves
• 1 partridge in a pear tree."

How many gifts does my true love give to me in these twelve days of Christmas?