e.q.the United States-U.S 目 the United Nations-UN secretary-secr.January-Jan. ▣ and& dollar-$ more than five thousand5,000 You can develop your own system of symbols and signs as long as they are consistent and you can recognize them when you read back.  e.g. the United States— U.S  the United Nations— UN  secretary— secr. January— Jan.  and—& dollar— $  more than five thousand— 5,000 +  You can develop your own system of symbols and signs as long as they are consistent and you can recognize them when you read back