foo {
  test-37: #{interpolant}<#{interpolant};
  test-38: #{interpolant} <#{interpolant};
  test-39: #{interpolant}< #{interpolant};
  test-40: #{interpolant} < #{interpolant};
  test-41: #{interpolant}<lschema_#{ritlp};
  test-42: #{interpolant} <lschema_#{ritlp};
  test-43: #{interpolant}< lschema_#{ritlp};
  test-44: #{interpolant} < lschema_#{ritlp};
  test-45: #{interpolant}<#{litlp}_rschema;
  test-46: #{interpolant} <#{litlp}_rschema;
  test-47: #{interpolant}< #{litlp}_rschema;
  test-48: #{interpolant} < #{litlp}_rschema;
  test-49: lschema_#{ritlp}<lschema_#{ritlp};
  test-50: lschema_#{ritlp} <lschema_#{ritlp};
  test-51: lschema_#{ritlp}< lschema_#{ritlp};
  test-52: lschema_#{ritlp} < lschema_#{ritlp};
  test-53: lschema_#{ritlp}<#{litlp}_rschema;
  test-54: lschema_#{ritlp} <#{litlp}_rschema;
  test-55: lschema_#{ritlp}< #{litlp}_rschema;
  test-56: lschema_#{ritlp} < #{litlp}_rschema;
  test-57: #{litlp}_rschema<#{litlp}_rschema;
  test-58: #{litlp}_rschema <#{litlp}_rschema;
  test-59: #{litlp}_rschema< #{litlp}_rschema;
  test-60: #{litlp}_rschema < #{litlp}_rschema;
}