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; }