C22212323232133313113313331333132313331323132321111313122231211   >>    C2221232323213331311331333133313231333132313232111131312223121   <<    C22212323232133313113313331333132313331323132321111313122231213   >>      C22212323232133313113313331333132313331323132321111313122231212   >>