C3133313112331333131123313331323133313231323223313331323211231211   >>    C313331311233133313112331333132313331323132322331333132321123121   <<    C3133313112331333131123313331323133313231323223313331323211231213   >>      C3133313112331333131123313331323133313231323223313331323211231212   >>