- It 's pronounced placing the mouth almost closed.
For example:
bit, fill, lick, mill, chip, sit...
- It's pronounced with the shaped mouth almost smile.
For example:
seek, been, least, heat, feet, feel...
- It's pronounced when put the tongue between the teeth.
For example:
three, thousand, think, thin...
- It´s pronounced clashing the tongue behind the teeth.
For example:
mother, them, that, their, thursday...