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. 2016 Mar 30;6:23731. doi: 10.1038/srep23731

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(a) Row codes: 00000; Column codes: 10000. (b) Row codes: 01100; Column codes: 10110. (c) Row codes: 00001; Column codes: 11001. (d) Row codes: 10000; Column codes: 10001. (e) Row codes: 11001; Column codes: 11100. (f) Row codes: 11101; Column codes: 10111.