how do you exactly pronounce ㄲ,ㄸ, ㅃ, ㅆ, ㅉ and when are they properly used? ==a Someone told me that double consonants shouldn't be pronounced as just one consonant (ㄲ =/= ㄱ) but every time I try to pronounce them, native speakers tell me I'm pronouncing it wrong. Help! u_u