Rc1/8(PT1/8)×R1/4(PT1/4)
Rc1/4(PT1/4)×R1/8(PT1/8)
Rc1/4(PT1/4)×R3/8(PT3/8)
Rc3/8(PT3/8)×R1/4(PT1/4)
Rc3/8(PT3/8)×R1/2(PT1/2)
Rc1/2(PT1/2)×R3/8(PT3/8)