fn main() {
    let mut t = String::new();
    std::io::stdin().read_line(&mut t).ok();
    let t: usize = t.trim().parse().unwrap();

    for _ in 0..t {
        let mut hw = String::new();
        std::io::stdin().read_line(&mut hw).ok();
        let hw: Vec<usize> = hw.trim().split_whitespace().map(|s| s.parse().unwrap()).collect();
        let h = hw[0];
        let w = hw[1];
        let result = (0..=h).map(|i| {
                let ret = if i % 3 == 0 { (0..=w).map(|j| if j % 3 == 0 { "0" } else { "1" }).collect::<Vec<_>>().join("") }
                    else { (0..=w).map(|j| if j % 3 == 0 { "1" } else { "2" }).collect::<Vec<_>>().join("") };
                ret.chars().collect::<Vec<_>>()
            })
            .collect::<Vec<_>>();
        let hstart = if h % 3 == 2 { 1 } else { 0 };
        let wstart = if w % 3 == 2 { 1 } else { 0 };
        for i in 0..h {
            for j in 0..w {
                print!("{}", result[i+hstart][j+wstart]);
            }
            println!();
        }
    }
}