Swift 3 - Create for loop UIButtons - for-loop

Question

Hello guys, I create 14 buttons in for loop but each 7 buttons in one variable for example:
for i in 0...6 {
var button = UIButton()
...
var button2 = UIButton()
...
}
But I want create 14 buttons in one variable with for loop like in the picture:
In the picture I do it with two buttons in one for loop
And my sizes, xAxis and yAxis it must be :
let buttonWidth = self.view.frame.size.width / 7
var xAxis : CGFloat = 1
let yAxis : CGFloat = self.view.frame.size.height - (tileWidth * 2) - 100
let yAxis2 : CGFloat = self.view.frame.size.height - (tileWidth + 100)
So how can I create 14 button with using for loop with same sizes and axises ? like this :
for i in 0...13 {
var button = UIButton()
...
}

Answer 1

Edit
let emptySpace:CGFloat = 40 //how much you want (left + right)
var xAxis:CGFloat = emptySpace/2
let space:CGFloat = 2
let buttonWidth = ((self.view.frame.size.width)-((space*7)+emptySpace)) / 7
var yAxis : CGFloat = self.view.frame.size.height - (tileWidth * 2) - 100
let yAxis2 : CGFloat = self.view.frame.size.height - (tileWidth + 100)
for i in 1...14 {
let button = UIButton(type: .roundedRect)
button.frame = CGRect(x: xAxis, y: yAxis, width: buttonWidth, height: buttonWidth)
button.layer.cornerRadius = 10
xAxis = xAxis+buttonWidth+space
button.backgroundColor = UIColor.orange
view.addSubview(button)
if i%7 == 0 {
xAxis = emptySpace/2
yAxis = yAxis2+space
}
}