D331212121133132233131323223313233313233313223313231333131312121   >>    D33121212113313223313132322331323331323331322331323133313131212   <<    D331212121133132233131323223313233313233313223313231333131312123   >>      D331212121133132233131323223313233313233313223313231333131312122   >>