Both, neither, either – Exercise 497

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How to use both, neither, either

both = A and B	neither = not A and not B	either = A or B
both versions	neither version	either version
both (of) those versions	neither of those versions	either of those versions
both of them they both	neither of them	either of them
both version 1 and version 2	neither version 1 nor version 2	either version 1 or version 2
I used both of them.	I used neither of them.	I didn't use either of them.
I used them. Tom used them, too.	I didn't use them. Neither did Tom.	I didn't use them. Tom didn't use them either.