D33121212113313223313132322331323331323331322331313233313221231   >>    D3312121211331322331313232233132333132333132233131323331322123   <<    D33121212113313223313132322331323331323331322331313233313221233   >>      D33121212113313223313132322331323331323331322331313233313221232   >>