C3133313112331333131123313331323133313231323223313331323311331321   >>    C313331311233133313112331333132313331323132322331333132331133132   <<    C3133313112331333131123313331323133313231323223313331323311331323   >>      C3133313112331333131123313331323133313231323223313331323311331322   >>