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// check-pass
#![feature(type_alias_impl_trait)]
use std::fmt::Debug;
fn main() {}
type Two<A: Debug, B> = impl Debug;
fn two<T: Debug + Copy, U>(t: T, u: U) -> Two<T, U> {
(t, t)
}
fn three<T: Debug, U>(t: T, t2: T, u: U) -> Two<T, U> {
(t, t2)
}
fn four<T: Debug, U, V>(t: T, t2: T, u: U, v: V) -> Two<T, U> {
(t, t2)
}
fn five<X, Y: Debug>(x: X, y: Y, y2: Y) -> Two<Y, X> {
(y, y2)
}
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