D3312121211331322331313232233132333132333132233132313331333132313121221   >>    D331212121133132233131323223313233313233313223313231333133313231312122   <<    D3312121211331322331313232233132333132333132233132313331333132313121223   >>      D3312121211331322331313232233132333132333132233132313331333132313121222   >>