C3131313233313113313223313223313112113313231323111133132313331323132211233131   >>    C313131323331311331322331322331311211331323132311113313231333132313221123313   <<    C3131313233313113313223313223313112113313231323111133132313331323132211233133   >>      C3131313233313113313223313223313112113313231323111133132313331323132211233132   >>