browser's Help section.
a It'sIts hot.
b The poor cat! ItsIt's paw has a thorn in it.
c TheirsThere'sTheres a dog over there.
d It's not theirstheresthere's, it'sits mine.
e This is not my book, itsit's yoursyour's.
f The dog hasn't eaten itsit's bone. I think it'sits buried the horrible thing.