2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/144012We show that lens space surgeries on knots in $S^3$ which arise from the primitive/Seifert type construction also arise from the primitive/primitive construction. This is the first step of a three step program to prove the Berge conjecture for tunnel number one knots.18 pages, 8 figuresGeometric Topology57M25text