package main

import (
	"bufio"
	"fmt"
	"os"
	"strings"
)

func main() {
	keys := map[string]bool{}
	for _, k := range os.Args[1:] {
		keys[k] = true
	}

	s := bufio.NewScanner(os.Stdin)

	for s.Scan() {
		ss := []string{}
		for _, f := range strings.Fields(s.Text()) {
			kv := strings.Split(f, "=")
			if len(kv) != 2 {
				continue
			}
			k := kv[0]
			if _, ok := keys[k]; !ok {
				continue
			}
			ss = append(ss, f)
		}
		if len(ss) > 0 {
			fmt.Println(strings.Join(ss, " "))
		}
	}
}