const rl = require("readline").createInterface({ input: process.stdin });
var iter = rl[Symbol.asyncIterator]();
const readline = async() => (await iter.next()).value;
void async function() {
// Write your code here
while (str = await readline()) {
let arr = []
let enarr = str.split(/[^a-zA-Z]/g).join('').split('')
enarr.sort((a, b) => {
return a.toLowerCase().charCodeAt(0) - b.toLowerCase().charCodeAt(0)
})
for (let i = 0; i < str.length; i++) {
if (/[^a-zA-Z]/.test(str[i])) {
arr[i] = str[i]
}
}
for (let i = 0; i < str.length; i++) {
arr[i] = arr[i] !== undefined ? arr[i] : enarr.shift()
}
console.log(arr.join(''))
}
}()