Formermuml(imperative) · at mumle(infinitive) · mumler(present) · mumlede(past) · har mumlet(perfect) · mumler(active, present) · mumles(passive, present) · mumlede(active, past) · mumledes(passive, past) · mumle(active, infinitive) · mumles(infinitive, passive) · muml(active, imperative) · -(imperative, passive) · mumlende(participle, present) · mumlet(participle, past) · auxiliary verb have(participle, past) · mumlen(gerund, participle)