C3133313112331333131123313331323133313231323223313331323123231323221   >>    C313331311233133313112331333132313331323132322331333132312323132322   <<    C3133313112331333131123313331323133313231323223313331323123231323223   >>      C3133313112331333131123313331323133313231323223313331323123231323222   >>