D331212121133132233131323223313233313233313223313231333133313223312121   >>    D33121212113313223313132322331323331323331322331323133313331322331212   <<    D331212121133132233131323223313233313233313223313231333133313223312123   >>      D331212121133132233131323223313233313233313223313231333133313223312122   >>