Here are the final four! These four are aspirated sounds.
If you don’t know what that means, they basically are said with more of a puff of air. Also, try to see if you can catch something in common with all of these in relationship to their similar consonant sounds.
ㅋ
this is like “kha”. It is similar to the ㄱ sound, except is said with more air. More towards a K sound.
ㅌ
This is a t sound, much like ㄷ, except said with more air to it!
ㅊ
This is a “cha” sound. Always. It is similar to the ㅈ sound, except said with more air to it. Always a “cha” sound, never a j sound ( ㅈ sounds like a j between vowels,ㅊ sounds like a cha between vowels.)
ㅍ
This is the last consonant, and last character you will learn in Hangul! It has an airy P sound to it. Similar to ㅂ but with more air.
Did you catch what is in common in them all? They all look very similar to the other consonants that sound similar! The only thing is, each contains an extra little line somewhere. The only one that doesn't fit perfectly with this is ㅍ and ㅂ. Look at them and compare them.
ㅊ - ㅈ
ㅌ - ㄷ
ㅋ - ㄱ
ㅍ - ㅂ