on 31 March 2000: claims 1 to 11 for all designated Contracting States, except AT, and claims 1 to 11 for the Contracting State AT; or(c) second auxiliary request filed on 31 March 2000: claims 1 to 10 for all designated Contracting States, except AT, and claims 1 to 10 for the Contracting State AT; or(d) third auxiliary request filed on 31 March 2000: claims 1 to 10 for all designated Contractin