2. Mathematical symbol: ﹢×÷/= ≌∽≦≒≒﹤≡≠ = ≤≥ < > ≮≯∷∶∫∮∝∞∧∨∑∏∪∩∈∵∴⊥∥∠⌒⊙? √∟⊿㏒㏑%
3. punctuation marks:. ,、':∶; ? ' '""〝〞? ˇ﹕︰﹔﹖﹑ ….? ; ! ? ? ! ~—ˉ|‖"〃`@﹫﹏﹋﹌︴々﹟#﹩$﹠&; ﹪%*﹡﹢﹦﹤
4. Unit symbol: ""%℃ ℉? ﹪‰㎡㏕㎜㎝㎞㏎m? ㎎㎏㏄? ○ %
5. Arrow symbol: ←→↖↗↘↙