MASCULINE FEMININE NEUTER SINGULAR NOM. planus plana planum GEN. plani planae plani DAT. plano planae plano ACC. planum planam planum ABL. plano plana plano PLURAL NOM. plani planae plana GEN. planorum planarum planorum DAT. planis planis planis ACC. planos planas plana ABL. planis planis planis