http://huaeryiyang.blog.163.com/blog/static/20299702420124218476878/
"+": 1 - += (, ) 2 - : ... 29 - + = () 30 - . 31 - . + 32 - 33 - : 2 + ... 46 - + 47 - +. 48 - . : !
" ": 1 - - 2 - 3 - . 4 - 5 - ........!!!!... 9 - 10 - 11 - . +.