Pain or No Pain?

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MEEEQFVETHIVNZQIAUAU IFRJFALSEZEFPIISLNSG MUIRZRVJTQHTAQMQADLZ HHLCSIGNALSWRNJGJTER KYAYXBKIVOUXIHOVTIEN ANQKCJXVJHLBGBKDEWPR EEFCMPNPNJJHRFSVGKXR SRCILYMYNXOEPAKNQWRS DVHRIXOWTZNNYOIQCESH TEFTGVRQZKHDVELNUCDZ YSJXWWPTDOGOIZPRIFFW RKMNWPHBHTMRMZTBGVHM OZZOTGIQRBXPLBLVDOUV MWHTTUNTIZTHLJQZDVRI EREAGNEORNMIJROIUYUX MOPUVIAGUJWNQYSYJGNQ VFPDMPKHEQCSQLBXXRRE QPZTGQHXPPLKCHEWUXKA BMARQAPBJKBRGPFZHCQO PAINQQCBJTEAKTZLQGMJ
1.
Brain
2.
Pain
3.
Morphine
4.
Signals
5.
Nerves
6.
Memory
7.
Endorphins
8.
Phantom
9.
Sleep
10.
False
11.
True
12.
Tricky