package main

import (
	"fmt"
	"time"
)

func main() {
	count := 1
	side1 := make(chan int)
	side2 := make(chan int)
	
	tick := time.NewTicker(1*time.Second)

	go func(){
		for range side1 {
			fmt.Println("Tick")
		}
	}()

	go func() {
		for range side2 {
			fmt.Println("Tack")
		}
	}()

	for range tick.C {
		if count % 2 == 0 {
			side2 <- 1
			count = 1
		} else {
			side1 <- 1
			count++
		}
	}
}