après un problème de connections ,vaut mieux tard que jamais ,quelque vidéo
https://www.youtube.com/watch?v=u1yt8dRi95Y
https://www.youtube.com/watch?v=WeQrqcwxzwM&feature=related
https://www.youtube.com/watch?v=njTT7i2yRos&feature=related
https://www.youtube.com/watch?v=fxPnApbmYuA&feature=related
https://www.youtube.com/watch?v=-4O-VLY_N5s&feature=related
https://www.youtube.com/watch?v=JIevbburqKk&feature=related
https://www.youtube.com/watch?v=q-e7S3U_nj8&feature=related
https://www.youtube.com/watch?v=CkeC-sVzXI0&feature=related
https://www.youtube.com/watch?v=WoCozKw8lRI&feature=related
https://www.youtube.com/watch?v=3PgdAtrjAMw&feature=related