Sentence:  So with four complete Push-Pull Super-Sets No. 1 , four of No. 2 , four of No. 3 and <WSD>four</WSD> to six sets of the Incline Bench Press , you can see that Henri de Courcy has had a terrific mass building , muscle shaping , torso defining workout that cannot be improved upon . 
Meaning of the word marked with <WSD> tags:  being one more than three