```go
package main

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

func main() {
	reader := bufio.NewReader(os.Stdin)
	writer := bufio.NewWriter(os.Stdout)
	defer writer.Flush()

	var t int
	fmt.Fscan(reader, &t)

	for i := 0; i < t; i++ {
		var n int
		fmt.Fscan(reader, &n)
		k := (n + 3) / 4
		writer.WriteString(strings.Repeat("9", n-k))
		writer.WriteString(strings.Repeat("8", k))
		writer.WriteByte('\n')
	}
}
```