fn main() {
    for dist_code in 0..=29 {
        let bits: u16 = match dist_code {
            0...3 => 0,
            4...5 => 1,
            6...7 => 2,
            8...9 => 3,
            10...11 => 4,
            12...13 => 5,
            14...15 => 6,
            16...17 => 7,
            18...19 => 8,
            20...21 => 9,
            22...23 => 10,
            24...25 => 11,
            26...27 => 12,
            28...29 => 13,
            _ => panic!("bad dist code"),
        };
        let dist = 1 + if bits == 0 { 0 } else { // new_base
                                2 << bits
                            } + ((dist_code as u16 - if bits == 0 { 0 } else { // old_base
                                bits * 2 + 2
                            }) << bits);
        println!("{}", dist);
    }
}