42 42_ 42km 42km_2
4.514 0.47foo_7
4_8_7_4.2_4_7
4~12
16~badFaCE
36~azertyuiop0123456789

----------------------------------------------------

[
	["number", "42"], ["number", "42_"], ["number", "42km"], ["number", "42km_2"],
	["number", "4.514"], ["number", "0.47foo_7"],
	["number", "4_8_7_4.2_4_7"],
	["number", "4~12"],
	["number", "16~badFaCE"],
	["number", "36~azertyuiop0123456789"]
]

----------------------------------------------------

Checks for numbers.