crazy coin game

I read about this game in a book

the game goes like this:

get 2 pennies and two dimes. or two loonies and two toonies. just get any TWO pairs of coins that have different colors.

draw FIVE circles on a page:

o
o
o
o
o

Put the dimes in the top two circles

dime
dime
o
o
o

put the pennies in the bottom two circles

dime
dime
o
penny
penny

NOW, SWAP the positions of the dimes and pennies IN LESS THAN 8 MOVES!!

so in the end, you will have:
penny
penny
o
dime
dime

Its harder than it looks!