19 sock
nineteen socks
11 king
eleven kings
2 cat
two cats
16 panda
sixteen pandas
9 igloo
nine igloos
17 queen
seventeen queens
15 octopus
fifteen octopuses
5 egg
eggs
7 gorilla
seven gorillas
18 ring
eighteen rings
20 tiger
twenty tigers
14 nut
fourteen nuts
6 fish (irregular)
six fish
8 hat
eight hats
12 lion
twelve lions
3 book
three books
1 apple
one apple / an apple
4 dog
four dogs
13 mouse (irregular)
thirteen mice
10 jet
ten jets