Given two strings, output them in alphabetical order.
Note: the order is AaBbCcDd ... YyZz.
For each case a line, there are two strings separated by a single space. The lengths of the strings are no more than 30.
Case 1: line <= 500
Case 2: line <= 15000
Case 3: line <= 25000
Case 4: line <= 35000
For each case a line, output the two strings in alphabetical order, separated by a single space.