of Pluralize
Source: Webster's dictionaryIf a word is pluralized by the addition of an "s", the "s" must also be part of another complete word that was placed on the board. Source: Internet
If irregular, they fall in the pluralis fractus category, in which a word is pluralized by internal vowel changes: ktieb, kotba "books", raġel, irġiel "man", "men". Source: Internet
It is rare to pluralize furniture in this way and information is never pluralized. Source: Internet
Nor must the adjectives be pluralized as well the nouns in Ido the large books would be la granda libri as opposed to the French les grands livres or the Esperanto la grandaj libroj. Source: Internet
Only the following three are commonly found: The following -(e)n plurals are found in dialectal, rare, or archaic usage: The word box, referring to a computer, is occasionally pluralized humorously to boxen in the hacker subculture. Source: Internet
Some words can be pluralized with either of the suffixes to denote the plural. Source: Internet