[TypesScript V4] ${X | Y} - ${W | Z}
type Corner = `${'top' | 'bottom'} - ${'left' | 'right'}`
type Corner = Capitalize<`${'top' | 'bottom'} - ${'left' | 'right'}`>
// "Top - left" | "Top - right" | "Bottom - left" | "Bottom - right"
type Corner = `${'top' | 'bottom'} - ${'left' | 'right'}`
type Corner = Capitalize<`${'top' | 'bottom'} - ${'left' | 'right'}`>
// "Top - left" | "Top - right" | "Bottom - left" | "Bottom - right"