xxx.ps1

param (
    [string]$destiny = "../folder",
    [string]$prefix = "./"
)


foreach ($i in Get-ChildItem -Path $prefix -Recurse)
{
    Get-Content "input.txt" | Foreach-Object{
        if ($i.Name -match "^$_.*[a-zA-Z]{3}$")
        {
            Write-Output "copy-pasting $($i.FullName) to $destiny"
            Copy-Item -Path $i.FullName -Destination $destiny
        }
    }
}