(Program {+(Import)+} {+(QualifiedAliasedImport {+(Identifier)+})+} { (Import) ->(Import) } {+(Import)+} {+(Import)+} {+( {+(Import)+} {+(Import)+})+} {+( {+(Import)+} {+(QualifiedAliasedImport {+(Identifier)+})+})+} {+(SideEffectImport)+} {-(QualifiedAliasedImport {-(Identifier)-})-} {-(Import)-} {-(Import)-} {-(Import)-} {-( {-(Import)-} {-(Import)-})-} {-( {-(Import)-} {-(QualifiedAliasedImport {-(Identifier)-})-})-} {-(SideEffectImport)-})