Best plural forms ranked:

1) internal (tours de force, culs-de-sac)
2) ending in -i (magi)
3) is to es (oases)
4) suppletive (people)
5) vowel changes (geese)
6) f to ves (thieves)
7) adding en (oxen)
8) no change (moose)
9) adding es, ies (boxes, babies)
10) adding s

Pet parrots which typically live alone (whilst those in the wild live in large flocks) were given the technology to call each other. They would use it for up to three hours a day, and developed favourite friends 💔
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