R d4

R d4R d4R d4R d4R d4R d4
R d4R d4R d4R d4R d4R d4
R d4R d4R d4R d4R d4R d4R d4R d4R d4R d4R d4R d4R d4R d4R d4R d4R d4R d4R d4R d4R d4R d4R d4R d4R d4R d4R d4R d4R d4R d4R d4R d4R d4R d4R d4R d4