Idioms from numbers

1) At first sight (Adv) - When you first consider something.
2) Forty winkis (N) - Short nap.
3) In seventh heaven (Adj, Adv) - Happy place; hapiness.
4) Of two minds (Adj; Adv) - In doubt.
5) On cloud nine (Adj; Adv) - In a happy place; happy.
6) On second though (Adv) After some consideration (after more careful look).
7) Put two and two together (V) figure out.
8) Second Nature (N) Natural talent (ability)
9) Second to none (Adj) the best.
10) Six of one, half of the other (Exp) It doesn't make any difference.
12) Sixth sense (N) Extrasensory ability (perception).