Video lesson
Consonant 2 – Double consonants
ㄲ – sounds like a strong k – romanized as kk
ㄸ – sounds like a strong t/d – romanized as tt
ㅃ – sounds like a strong p/b – romanized as bb
ㅆ – sounds like a strong s – romanized as ss
ㅉ – sounds like a strong j – romanized as jj