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Statement

 Goal

Given two horizontal words (H1, H2) and two vertical words (V1, V2), find out if they can be printed so that they all intersect two by two.

Each horizontal word must cross both vertical words.
Each vertical word must cross both horizontal words.

Words cannot be side by side:
The two horizontal words must be at least one row apart from each other.
The two vertical words must be at least one column apart from each other.

If there is one and only one solution, print out the crossword grid with dots "." for empty spaces.
Otherwise, print the number of solutions (could be zero).

The grid shall be adjusted to its minimal size.
Input
Line 1: A horizontal word H1
Line 2: A horizontal word H2
Line 3: A vertical word V1
Line 4: A vertical word V2
Output
The crossword grid if there is one and only one solution.
The number of solutions otherwise.
Constraints
1 ≤ length of each word ≤ 12
Example
Input
SIN
BUT
SOB
NOT
Output
SIN
O.O
BUT
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