C 10/11/12

C10  A tread pattern for rear wheels of cross motorcycles for a semi-hard to hard terrain. C11 A tread pattern for front wheels of cross motorcycles for a semi-hard terrain. C12 A tread pattern for rear wheels of cross motorcycles for a semi-hard to soft terrain.C13 A tread pattern for front wheels of cross motorcycles for a semi-hard to soft terrain. C14 A tread pattern for rear wheels of cross motorcycles suitable particularly for a very soft terrain.