C3131313233313113313223313223313221323331323132313321323132311331   >>    C313131323331311331322331322331322132333132313231332132313231133   <<    C3131313233313113313223313223313221323331323132313321323132311333   >>      C3131313233313113313223313223313221323331323132313321323132311332   >>