Explain ten procsesses by which singular nouns could be become plural

Add ‘s’ for making the Plural of Singular noun. " the general rule".
IF a word ends at alphabet ‘o’ then we will add ‘es’ to make their plural form.
If a noun ends at these alphabets (x,z,s,ss,sh,ch), then add ‘es’ to make their plurals.
If a Word ends with the alphabet ‘y’ and there is a consonant before ‘y’ then replace ‘y’ with ‘ies’.
If a word ends with the alphabet ‘y’ and there is a ‘Vowel’ before ‘y’ then use add ‘s’ to make the plural of that word.
If a word ends with ‘f’ or ‘fe’ then replace them with ‘ves’ to make plurals.
Do not apply the previous rule to these words; [Chef,Chefs/ Cliff,Cliffs/ Roof,Roofs/ Handkerchief,Handkerchiefs/belief, beliefs...,etc.]
To make Plural of these nouns just change their vowels; [Woman, Women/ Foot, Feet/ Tooth, Teeth/ Mouse, Mice/ Goose, Geese/ Louse, Lice].
These words are the same in Singular and Plural Form. [Sheep, deer, Fish, people, Hundred, Thousand, Swine, Aircraft, Offspring, Dozen, Score, million,Billion].
There are irregular plural nouns like "children" from the singular noun " child", "men, man", and " mice, mouse".

Hope this help! :)

Explain ten procsesses by which singular nouns could be become plural​