a [1] b1 [2] b2 [2] b3 [2]

  1. x
  2. 2,0 2,1 2,2 y

r-a [i] r-b1 [ii] r-b2 [ii]

  1. x
  2. 2,0 2,1 y

d-a [decimal 1] d-b1 [decimal 2] d-b2 [decimal 2]

  1. x
  2. 2,0 2,1 y

g-a [α] g-b1 [β] g-b2 [β]

  1. x
  2. 2,0 2,1 y