In 820 the corrections of Buecheler and Scaliger are accepted. In 822 the MSS. have quom penes me potestas; quom for quos from v. 823, lacuna supplied by Klotz, met <fuit nulla>, by Leo, mei <fuit saepe>. I conceive an intermediate stage: quom penes mei <positast> potestas, which would account for the lacuna by haplography, as well as for the change of mei to me (posita pot- is, of course, a proceleusmatic foot).