给定一串汉语拼音的字符串，按照手机输入的方式，翻译成相对应的数字。

例如：nihao翻译成664442666

相反,给定一串数字，翻译成字母，列出所有的可能

例如：222 翻译成 aaa或ba或ab

-Pinyin string given a string, according to the way mobile phone input, translated into the corresponding number. For example: nihao translated into 664 442 666 On the contrary, given a string of numbers, translated into letters, list all the might, for example: 222 translated or ba or ab aaa