Buuxi weedha soo socota: Jansen waxay ku guuleysatay horyaalkeedii ugu horreeyay ee seddexdii horyaal ee qaranka Holland oo isku xigta xilli ciyaareedkii 1977-78. Waxay tartan ku gashay shan ISU Championships, waxay ku dhameysatay kaalinta 17-aad 1978 Yurub ee Strasbourg, France; 18-aad 1978 Worlds ee Ottawa, Ontario, Canada; 20-aad 1979 Yurub ee Zagreb, Yugoslavia; 23-aad ee
1979 Worlds ee Vienna, Austria; iyo 18aad ee 1980 Yurub ee Gothenburg, Sweden.