C22212323232133313113313331333132313331323132321111313123233131   >>    C2221232323213331311331333133313231333132313232111131312323313   <<    C22212323232133313113313331333132313331323132321111313123233133   >>      C22212323232133313113313331333132313331323132321111313123233132   >>