D331212121133132233131323223313233313233313223313231333133313221232211   >>    D33121212113313223313132322331323331323331322331323133313331322123221   <<    D331212121133132233131323223313233313233313223313231333133313221232213   >>      D331212121133132233131323223313233313233313223313231333133313221232212   >>