C31313132333131133132233132233131121133132333131333132333132322232211   >>    C3131313233313113313223313223313112113313233313133313233313232223221   <<    C31313132333131133132233132233131121133132333131333132333132322232213   >>      C31313132333131133132233132233131121133132333131333132333132322232212   >>