OA(4,3,2,2)

λ = 1, 1 / 2

d(C) = 2

ρ(C) = 1

↙    ↘

OA(2,2,2,1)

λ = 1, 1 / 2

d(C) = 2

ρ(C) = 1

OA(2,2,2,1)

OA(4,2,2,2)

λ = 1, 1 / 1

d(C) = 1

ρ(C) = 0

↙    ↘

OA(2,1,2,1)

λ = 1, 1 / 1

d(C) = 1

ρ(C) = 0

OA(2,1,2,1)