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