Pronunciation of Two-Consonant patchim

Question

I have just come across the link about pronunciation of two-consonant patchim in Korean. Does anyone know any basics for the rules such as why do the rules exist? Also is there a simple way to remember it?

I ask for the logic behind the rule because it helps me to remember it easier and faster.

Answer 1

1) two consonants+consonant o : 앉아 (sit) => 안자,

젊어 (young) => 절머 (b), 넋이 (spirit)=>넉씨

2) two consonants+not consonant o : 넋과 =>넉꽈,

얹다 (put) => 언따, 핥다 (lick) => 할따, 없다 (no existence) => 업따,

넓다 (spacious) => 널따(a), 맑게 (transparent) => 말께 (c)

@ 1) and 2) : We pronounce first consonant and sencond consonant puts some effect on following letter

3) Irregular : 밟다 (foot)=> 밥따 (compare (a)),

넓죽하다 => 넙쭈카다 (compare (a)), 젊다 => 점따 (compare (b))

맑다 => 막따 (compare (c))