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Given the following letters arranged in a circular pattern.
A
B E
C D
Each letter can merge with any of its opposite letters to form an adjacent letter. e.g.
A + C = B + B
A + D = E + E
B + E = A + A
B + D = C + C
C + A = B + B
C + E = D + D
D + B = C + C
D + A = E + E
E + ...
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Across
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