r=10;
r2=8.5;

hull() {
    translate([-r2,-r2,-r2])
    sphere(r=2, $fn=64);
    
    translate([r2,-r2,-r2])
    sphere(r=2, $fn=64);
    
    translate([r2,r2,-r2])
    sphere(r=2, $fn=64);
    
    translate([-r2,r2,-r2])
    sphere(r=2, $fn=64);
    
    translate([-r2,-r2,r2])
    sphere(r=2, $fn=64);
    
    translate([r2,-r2,r2])
    sphere(r=2, $fn=64);
    
    translate([r2,r2,r2])
    sphere(r=2, $fn=64);

    translate([-r2,r2,r2])
    sphere(r=2, $fn=64);
}

color([1,0,0])
{
    rotate([0,0,0])
    translate([0,0,r])
    text("A", halign="center", valign="center", size=15, font="Open Sans");
    rotate([0,180,0])
    translate([0,0,r])
    text("F", halign="center", valign="center", size=15, font="Open Sans");

    rotate([90,0,0])
    translate([0,0,r])
    text("B", halign="center", valign="center", size=15, font="Open Sans");
    rotate([-90,180,0])
    translate([0,0,r])
    text("E", halign="center", valign="center", size=15, font="Open Sans");

    rotate([90,0,90])
    translate([0,0,r])
    text("C", halign="center", valign="center", size=15, font="Open Sans");
    rotate([-90,180,90])
    translate([0,0,r])
    text("D", halign="center", valign="center", size=15, font="Open Sans");
}