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