Morphological analyser/Exercises

English plurals

Orthographic, not necessarily phonological

book<n><pl> ↔ books, name<n><pl> ↔ names, computer<n><pl> ↔ computers, house<n><pl> ↔ houses, phone<n><pl> ↔ phones, bread<n><pl> ↔ breads, judge<n><pl> ↔ judges, toy<n><pl> ↔ toys, piano<n><pl> ↔ tags, proof<n><pl> ↔ proofs, chief<n><pl> ↔ chiefs
f→v: wife<n><pl> ↔ wives, life<n><pl> ↔ lives

watch<n><pl> ↔ watches, box<n><pl> ↔ boxes, waitress<n><pl> ↔ waitresses, tomato<n><pl> ↔ tomatoes, dish<n><pl> ↔ dishes, virus<n><pl> ↔ viruses
y→i: baby<n><pl> ↔ babies, fly<n><pl> ↔ flies, berry<n><pl> ↔ berries
doubled letter: quiz<n><pl> ↔ quizzes
f→v: leaf<n><pl> ↔ leaves, wolf<n><pl> ↔ wolves, half<n><pl> ↔ halves, loaf<n><pl> ↔ loaves
x→c: appendix<n><pl> ↔ appendices

-en: child<n><pl> ↔ children, ox<n><pl>|oxen
alternation: man<n><pl> ↔ men, goose<n><pl>|geese}}, mouse<n><pl>|mice}}, tooth<n><pl>|teeth}}, crisis<n><pl> ↔ crises
null: deer<n><pl> ↔ deer, fish<n><pl> ↔ fish, sheep<n><pl> ↔ sheep
suppletive: person<n><pl> ↔ people
other: die<n><pl> ↔ dice
is→es: thesis<n><pl> ↔ theses, analysis<n><pl> ↔ analyses, crisis<n><pl> ↔ crises
um→a: stratum<n><pl> ↔ strata, millennium<n><pl> ↔ millennia
us→i: syllabus<n><pl> ↔ syllabi, nucleus<n><pl> ↔ nuclei, alumnus<n><pl> ↔ alumni
a→ae: larva<n><pl> ↔ larvae, alumna<n><pl> ↔ alumnae
on→a: criterion<n><pl>|criteria}}, phenomenon<n><pl> ↔ phenomena