C111113331333132322331333133313331333132313121111331311331323331333223211112321   >>    C11111333133313232233133313331333133313231312111133131133132333133322321111232   <<    C111113331333132322331333133313331333132313121111331311331323331333223211112323   >>      C111113331333132322331333133313331333132313121111331311331323331333223211112322   >>