What I found is that written evidence for knocking on wood (and for the history of gesture as a whole) is remarkably sparse. In the Penguin Guide to Superstitions, folklorist Steve Roud offers a skeptical take on the provenance of knocking on wood due to the near total absence of written records about it:
Гангстер одним ударом расправился с туристом в Таиланде и попал на видео18:08。同城约会对此有专业解读
Трамп высказался о непростом решении по Ирану09:14，推荐阅读同城约会获取更多信息
一辆辆车来，一辆辆车走。车上拉的都是灯。。下载安装 谷歌浏览器 开启极速安全的 上网之旅。是该领域的重要参考
再直白点，就是你买回去要么自己跟维京重新谈，要么自己重做一套系统——成本？时间？自己掂量。