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Doublets


:C(A,B,C), :보(낮,보,높), 벨:3(1~4)

About Doublets

를 더블릿 부른. 를 들 'booster' 'rooster', 'rooster' 'roaster', 'roaster' 'roasted' 등 더블릿.

는 16 대 25,143 (모 ) . . , 더블릿 . 를 들 'booster' 'roasted' 면, 면 'booster', 'rooster', 'roaster', 'roasted' .

Input

. 는데 면 빈 . .

output

. 는 더블릿 .

. ~cpp "No solution." . 는 빈 .

Sample Input

~cpp 
booster
rooster
roaster
coasted
roasted
coastal
postal

booster roasted
coastal postal

Sample Output

~cpp 
booster
rooster
roaster
roasted

No solution.

문보 C++ 룻밤 Doublets/문보
Java 2h30m Doublets/

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