Operariorum HOPERATUS 1. OPERA 2. OPERA Operatio Operam Reddere. Opera Terræ 1. OPERAGIUM 2. OPERAGIUM OPERALIS. OPERAMANUS OPERARE OPERARI 1. OPERARIA 2. OPERARIA OPERARIÆ 1. OPERARIUS 2. OPERARIUS OPERATA OPERATIM OPERATIO. Operationes Terrenæ OPERATOR OPERATORIA OPERATORIUM Operatorium OPERATRIX. OPERATURA 1. OPERATUS 2. OPERATUS Operatio Opera Tricare