The English language is a complex assortment of letters that weave their way into unusual rules, protocols and exceptions.
For example: the prefix "re"
such as in:
It's, according to dictionary.com, "a prefix, occurring originally in loanwords from Latin, used with the meaning “again” or “again and again” to indicate repetition, or with the meaning “back” or “backward” to indicate withdrawal or backward motion: regenerate; refurbish; retype; retrace; revert."
But then there are the exceptions that don't fit nicely in with the rule.
resume. . . what is a sume. . . ?
reduce . . . what is a duce. . .?
remit . . . what is a mit . . . ?
resist . . . what is a sist. . .?
require. . . what is a quire. . .?
It's apparent that English is a difficult language to learn.