Complex Symmetric Pattern

Given an integer N, print a dual-framed symmetric box of size 2*N x 2*N with an inverted diamond hollow interior: outer wings of stars and an inner expanding then contracting hollow diamond of spaces.

Input Format

A single integer N.

Output Format

Print 2*N rows forming the complex symmetric pattern.

Constraints:1 <= N <= 12

Concepts Required:

Dual wing computation2*N x 2*N grid space formulasInverted diamond cutouts

Expected Pattern PreviewASCII Monospace

**********
****  ****
***    ***
**      **
*        *
*        *
**      **
***    ***
****  ****
**********

Notice how character spacing and row counts scale systematically based on the input N.

Concrete Examples

Example 1

Input:

Output:

**********
****  ****
***    ***
**      **
*        *
*        *
**      **
***    ***
****  ****
**********

Explanation: Top half contracts wings, bottom half expands wings.

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