C3133313112331333131123313331323133313231323223313331323231311231   >>    C313331311233133313112331333132313331323132322331333132323131123   <<    C3133313112331333131123313331323133313231323223313331323231311233   >>      C3133313112331333131123313331323133313231323223313331323231311232   >>