Some things that come in groups of nine are pairs of fingers, pairs of toes.
Things that come in groups of 6 are Crushs and many more.
The pipers piping
what comes in groups of 12
Inches in a foot
months of pregnancy
legs of a insect
gaggle of geese
Case of beer
Things that come in groups of four are referred to as quadruplets. An example would be four children born at the same time by one mother.
Several things come in groups of 20. There are 20 cigarettes in a pack. You can also buy beer in 20 packs depending on the brand.