Pause between animate(s) method(s) in code

Hi, I have this code:

sym.$("foco").animate({"opacity":"1"},{duration:2000, easing:"swing", queue:true});

sym.$("foco").animate({"opacity":"0"},{duration:1000, easing:"swing", queue:true});

// I need pause here

sym.$("llanta").animate({"opacity":"1"},{duration:2000, easing:"swing", queue:true});

sym.$("llanta").animate({"opacity":"0"},{duration:1000, easing:"swing", queue:true});

And I need that execute first two lines and after the last two lines, but always execute both at the same time, how I implement a pause between animate method for execute sequentially?

Thanks.