Spelling- 'ie' or 'ei'

Q1 - Which is the correct spelling?

Beleive
Believe

Q2 - Which is the correct spelling?

Receive
Recieve

Q3 - Which is the correct spelling?

Freind
Friend

Q4 - Which is the correct spelling?

Weird
Wierd

Q5 - Which is the correct spelling?

Deceive
Decieve

Q6 - Which is the correct spelling?

Their
Thier

Q7 - Which is the correct spelling?

Acheive
Achieve

Q8 - Which is the correct spelling?

Theif
Thief

Q9 - Which is the correct spelling?

Sieve
Seive

Q10 - Which is the correct spelling?

Seize
Sieze