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C 4 n

C 4 nC 4 nC 4 nC 4 n
C 4 nC 4 nC 4 nC 4 nC 4 nC 4 nC 4 nC 4 n
C 4 nC 4 nC 4 nC 4 nC 4 nC 4 nC 4 nC 4 nC 4 nC 4 nC 4 nC 4 n
C 4 nC 4 nC 4 nC 4 nC 4 nC 4 nC 4 nC 4 nC 4 nC 4 nC 4 nC 4 nC 4 nC 4 nC 4 nC 4 n
C 4 nC 4 nC 4 nC 4 nC 4 nC 4 nC 4 nC 4 n