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what would be a regex that would match

this
t h i s
t32h34i234s
tdkndhklsajdilkasds
t &h$i __-s

"this" is what im supposed to spamfilter >.>

t.*h.*i.*s

But be warned that will also match a hell of a lot of valid sentences like the following since .* will match 0 or more of ANYTHING:

The quick brown fox jumps over the lazy dog.

In that example the first .* will match nothing, the second .* will match "e qu" and the third .* will match "ck brown fox jump"

thanks ^^.
and the word i want to spamfilter is more than 10 letters long, so that thing which you is said would be pretty rare lol.

id also like to know of a regex for

t'h'i's't'h'i'n'g

where ' is a single character or no character.

so it would match

t h i s t h i n g
this thing
thisthing

.? = 0 or 1 char instead of .* which is 0 or more