C31313132333131133132233132233131121133132333131333132333132313232212321   >>    C3131313233313113313223313223313112113313233313133313233313231323221232   <<    C31313132333131133132233132233131121133132333131333132333132313232212323   >>      C31313132333131133132233132233131121133132333131333132333132313232212322   >>