package main
 
import (
	"errors"
	"fmt"
)
 
func tekaTekiTeko(batas uint) ([]string, error) {
	if batas < 20 {
		return nil, errors.New("Eror! Batas minimal adalah 20")
	}
 
	output := make([]string, 0, batas)
 
	for i := uint(1); i <= batas; i++ {
		result := ""
 
		if i%2 == 0 {
			result += "Teka"
		}
		if i%3 == 0 {
			result += "Teki"
		}
		if i%5 == 0 {
			result += "Teko"
		}
 
		if result == "" {
			result = fmt.Sprint(i)
		}
 
		output = append(output, result)
	}
 
	return output, nil
}
 
func main() {
	hasil, err := tekaTekiTeko(30)
	if err != nil {
		fmt.Println(err)
		return
	}
 
	for _, v := range hasil {
		fmt.Println(v)
	}
}
 

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