help about timing of the chain for nissan titan?

could someone please help me out to get the marks to time the chain for a nissan titan. i took the heads out, for an overheating problem, and for a stupid reason i forgot to mark the chains with the heads pulleys, now i cant time it. does anyone have a chart, diagram or something to fix it? i have checked on the internet and it says that the chain has 3 marks, one for the crankshaft, and the other two for the heads pulleys, but i only see one mark on each chain. my email is [email protected]
 
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