package main

import "fmt"

func main() {
	// growing
	for row := 1; row <= 6; row++ {
		line := ""
		for star := 1; star <= row; star++ {
			line += "*"
		}
		fmt.Println(line)
	}

	// shrinking
	for row := 6; row >= 1; row-- {
		line := ""
		for star := 1; star <= row; star++ {
			line += "*"
		}
		fmt.Println(line)
	}
}