Singular  Plural  % Correct 

Mouse  Mice  96%

Calf  Calves  95%

Man  Men  95%

Child  Children  95%

Potato  Potatoes  91%

Nucleus  Nuclei  85%

Moose  Moose  83%

Ox  Oxen  81%

Crisis  Crises  76%

Radius  Radii  70%

Louse  Lice  69%

Axis  Axes  67%

Matrix  Matrices  66%

Millennium  Millennia  64%

Appendix  Appendices  64%

Chateau  Chateaux  57%

Nebula  Nebulae  43%

Stigma  Stigmata  41%

Court Martial  Courts Martial  38%

Seraph  Seraphim  34%

Alumna  Alumnae  33%

Phalanx  Phalanges  20%

Poltergeist  Poltergeister  11%

Genus  Genera  10%
