A verb can have two objects – a person and a thing. Such a verb can have two possible passive voices.

EXAMPLE:
Active: The salesman shows Nick a new computer. / The salesman shows a new computer to Nick.
Passive: Nick is shown a new computer.
Passive: A new computer is shown to Nick.

EXAMPLE:
Active: We lent Bob some money. / We lent some money to Bob.
Passive: Bob was lent some money.
Passive: Some money was lent to Bob.