
i14 : x_0 .. y_3

o14 = (x , x , x , x , y , y , y , y )
        0   1   2   3   0   1   2   3

o14 : Sequence

i15 : x_0 ..< y_3

o15 = (x , x , x )
        0   1   2

o15 : Sequence


Better would be

o15 = (x , x , x , x , y , y , y  )
        0   1   2   3   0   1   2

