Mathematical Reasoning

The maximum number of compound propositions, out of p\(\vee\)r\(\vee\)s, p\(\vee\)r\(\vee\)\(\sim\)s, p\(\vee\)\(\sim\)q\(\vee\)s, \(\sim\)p\(\vee\)\(\sim\)r\(\vee\)s, \(\sim\)p\(\vee\)\(\sim\)r\(\vee\)\(\sim\)s, \(\sim\)p\(\vee\)q\(\vee\)\(\sim\)s, q\(\vee\)r\(\vee\)\(\sim\)s, q\(\vee\)\(\sim\)r\(\vee\)\(\sim\)s, \(\sim\)p\(\vee\)\(\sim\)q\(\vee\)\(\sim\)s that can be made simultaneously true by an assignment of the truth values to p, q, r and s, is equal to __________.