<Table> Pretty Little Liar <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Td_colspan="2"> Arc 1: Pretty Little Liars Flawless Perfect Unbelievable Arc 2: Wicked Killer Heartless Wanted Arc 3: Twisted Ruthless Stunning Burned Arc 4: Crushed Deadly Toxic Vicious Companion novels: Alison's Pretty Little Diary Pretty Little Secrets Ali's Pretty Little Lies Pretty Little Love Pretty Little Lost </Td> </Tr> <Tr> <Th> Author </Th> <Td> Sara Shepard </Td> </Tr> <Tr> <Th> Country </Th> <Td> United States </Td> </Tr> <Tr> <Th> Language </Th> <Td> English </Td> </Tr> <Tr> <Th> Genre </Th> <Td> Young adult Mystery Romance Coming of age </Td> </Tr> <Tr> <Th> Publisher </Th> <Td> HarperTeen </Td> </Tr> <Tr> <Th> Published </Th> <Td> October 2006--December 2014 </Td> </Tr> <Tr> <Th> Media type </Th> <Td> Print (hardback & paperback) Audiobook E-book </Td> </Tr> <Tr> <Th> No. of books </Th> <Td> 18 (and 3 short stories) </Td> </Tr> </Table> <Tr> <Td_colspan="2"> Arc 1: Pretty Little Liars Flawless Perfect Unbelievable Arc 2: Wicked Killer Heartless Wanted Arc 3: Twisted Ruthless Stunning Burned Arc 4: Crushed Deadly Toxic Vicious Companion novels: Alison's Pretty Little Diary Pretty Little Secrets Ali's Pretty Little Lies Pretty Little Love Pretty Little Lost </Td> </Tr>

What order are the pretty little liars books in
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