(Program
  (
  {+(QualifiedImport
    {+(Identifier)+}
    {+(Identifier)+})+}
    (QualifiedImport
      (Identifier)
      (Identifier))
  {-(QualifiedImport
    {-(Identifier)-}
    {-(Identifier)-})-})
{+(QualifiedImport
  {+(Identifier)+}
  {+(Identifier)+})+}
{+(QualifiedImport
  {+(Identifier)+}
  {+(Identifier)+})+}
{-(
  {-(QualifiedImport
    {-(Identifier)-}
    {-(Identifier)-})-}
  {-(QualifiedImport
    {-(Identifier)-}
    {-(Identifier)-})-})-}
{-(QualifiedImport
  {-(Identifier)-}
  {-(Identifier)-})-})