C31313132333131133132233132233131121133132333131333132313232121   >>    C3131313233313113313223313223313112113313233313133313231323212   <<    C31313132333131133132233132233131121133132333131333132313232123   >>      C31313132333131133132233132233131121133132333131333132313232122   >>