German government bunds swung between gains and losses on Monday as the bonds prices slipped 1.3% this year through November 22 before this week's report forecast to show that inflation in the 17-nation bloc currency advanced in November. The benchmark 10-year bunds yielded at 1.75% by 7:13 a.m. in London and the 2 percent securities due in August 2023 traded at 102.215.