How to synchronize the slider?

Question

Slick

I have three sliders

spoiler

<spoiler title=""><section class="slider slider1">
    <div>slide1</div>
    <div>slide2</div>
    <div>slide3</div>
    <div>slide4</div>
    <div>slide5</div>
    <div>slide6</div>
</section>

<section class="slider slider2">
    <div>slide1</div>
    <div>slide2</div>
    <div>slide3</div>
    <div>slide4</div>
    <div>slide5</div>
    <div>slide6</div>
</section>

<section class="slider slider3">
    <div>slide1</div>
    <div>slide2</div>
    <div>slide3</div>
    <div>slide4</div>
    <div>slide5</div>
    <div>slide6</div>
</section>

and interconnected

spoiler

asNavFor: $('.slider, .slider2, .slider3')

And all 3 photos show the same thing. How to make it show 1 slide on the first, 2 on the second and 3 on the third