C121212123112323223313132322331323133313112331311221123231323221231   >>    C12121212311232322331313232233132313331311233131122112323132322123   <<    C121212123112323223313132322331323133313112331311221123231323221233   >>      C121212123112323223313132322331323133313112331311221123231323221232   >>