@prefix sh: <http://www.w3.org/ns/shacl#> .
@prefix ex: <http://example.org/shacl/tests/> .

ex:s1 a sh:PropertyShape ;
 sh:targetNode ex:i ;
 sh:path ( _:pinv _:pinv ) ;
 sh:class ex:C .

_:pinv sh:inversePath ex:p .

ex:s2 a sh:PropertyShape ;
 sh:targetNode ex:i ;
 sh:path ( [ sh:inversePath ex:p ] [ sh:inversePath ex:p ] ) ;
 sh:class ex:C .