Conjugate the following irregular verbs in the simple present tense (Indicative). 
 6. tener (to have) yo ________________________
 7. tener (to have) nosotros ________________________
 8. venir (to come) tú ________________________
 9. venir (to come) nosotros ________________________
 10. salir (to leave) él/ella ________________________
 11. volver (to return) ellos/ellas ________________________