C31313132333131133132233132233131121133132333131333132333132313211232321   >>    C3131313233313113313223313223313112113313233313133313233313231321123232   <<    C31313132333131133132233132233131121133132333131333132333132313211232323   >>      C31313132333131133132233132233131121133132333131333132333132313211232322   >>