iptables and OUTPUT policy

Hello,
Are the following iptables rules wrong?
Code:-P INPUT ACCEPT
-P FORWARD ACCEPT
-P OUTPUT ACCEPT
-A INPUT -i lo -j ACCEPT
-A INPUT -s "IP" -p tcp -m tcp --dport 20 -m conntrack --ctstate NEW,ESTABLISHED -j ACCEPT
-A INPUT -p tcp -m tcp --dport 20 -j DROP
-A INPUT -p tcp -m tcp --dport 30 -m conntrack --ctstate NEW,ESTABLISHED -j ACCEPT
-A INPUT -p tcp -m tcp --dport 30 -j DROP
-A INPUT -p icmp -m icmp --icmp-type 8 -m limit --limit 2/sec -j ACCEPT
-A INPUT -p icmp -m icmp --icmp-type 8 -j DROP
-A INPUT -p icmp -j ACCEPT
-A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
-A INPUT -m state --state INVALID -j DROP
-A OUTPUT -d "IP" -p tcp -m tcp --dport 40 -m conntrack --ctstate NEW,ESTABLISHED -j ACCEPT
-A OUTPUT -p tcp -m tcp --dport 40 -j DROPThank you.