Language/Volapuk/Grammar/passive

The passive in the various tenses is formed by adding the prefix p- to the various active tenses; (in this respect pa- is the present passive form). Any agent (the person or thing doing the action) is expressed by the word fa ‘by’. Here are some examples in the different tenses:

• löfob ‘I love’ palöfob (fa mot obik) ‘I am loved (by my mother)’
• elöfol ‘you’ve loved’ pelöfol (fa fat olik) ‘you’ve been loved (by your father)’
• älöfom ‘he loved; pälöfom (fa cils okik) ‘he was loved (by his own children);
• ilöfof ‘she’d loved’ pilöfof (fa daut obik) ‘she’d been loved (by my daughter)’
• olöfoy ‘one will love; polöfoy (fa blods) ‘one will be loved (by the brothers)’
• ulöfobs ‘we'll have loved; pulöfobs (fa sons obsik) ‘we’ll have been loved (by our sons)’

Source: http://www.xn--volapk-7ya.com/quick-look-at-volapuk.html