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package main

import (
  "fmt"
  "strings"
)

func main() {
    var n int
    fmt.Scanln(&n)

    spaces := 2 * n - 2
    stars := 2

    for row := 0; row < n; row++ {
        fmt.Println(strings.Repeat(" ", spaces) + strings.Repeat("*", stars))
        spaces -= 2
        stars += 2
    }

    spaces = 2
    stars = 2 * n - 2

    for row := 0; row < 2; row++ {
        fmt.Println(strings.Repeat("*", stars) + strings.Repeat(" ", spaces))
        spaces += 2
        stars -= 2
    }

    spaces = 2
    stars = 2 * n - 2

    for row := 0; row < 2; row++ {
        fmt.Println(strings.Repeat("*", stars) + strings.Repeat(" ", spaces))
        if spaces > 0 && stars > 0 {
            spaces -= 2
            stars += 2
        }
    }

    spaces = 2
    stars = 2 * n - 2

    for row := 0; row < 2; row++ {
        fmt.Println(strings.Repeat(" ", spaces) + strings.Repeat("*", stars))
        spaces += 2
        stars -= 2
    }

    spaces = 2
    stars = 2 * n - 2

    for row := 0; row < 2; row++ {
        fmt.Println(strings.Repeat(" ", spaces) + strings.Repeat("*", stars))
        if spaces > 0 && stars > 0 {
            spaces -= 2
            stars += 2
        }
    }

    spaces = 2
    stars = 2 * n - 2

    for row := 0; row < n; row++ {
        fmt.Println(strings.Repeat("*", stars) + strings.Repeat(" ", spaces))
        spaces += 2
        stars -= 2
    }
}