You meet 4 persons, at least one of them always tell the truth, and the other always lie.

Then you have conversation with them.

Andre : I, Brian and Cole are truth-tellers, Diego is a liar.
Brian : I'm truth-teller, Andre and Cole are liars.
Cole : I, and Andre are truth-tellers, other are liars.
Diego : I, and Andre are truth-tellers, Brian is a liar.

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## jasen

You meet 4 persons, at least one of them always tell the truth, and the other always lie.

Then you have conversation with them.

Andre : I, Brian and Cole are truth-tellers, Diego is a liar.

Brian : I'm truth-teller, Andre and Cole are liars.

Cole : I, and Andre are truth-tellers, other are liars.

Diego : I, and Andre are truth-tellers, Brian is a liar.

Identify the liars and truth-tellers.

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