ㄹ irregular verbs
Verbs and adjectives whose stem ends with a ㄹ 받침 are irregular. Some examples of include 알다, 살다, 열다 and 팔다. These verbs/adjectives don't follow normal conjugation rules required for 받침 containing stems, and instead follow the conjugation rules of non 받침 verbs. Also if followed by ㄴ,ㅂ,ㅅ, then the ㄹ in the stem disappears.
Normally verb/adjectives whose stem has a 받침 follows a certain type of rule to conjugate it with a grammar pattern. If you notice in this wiki and many other text books, there is often a (으) in grammar patterns, some examples include A/V + (으)면, A/V + (으)니까. So for example, the pattern A/V + (으)면 has two rules, if it has a 받침 at the end of the stem, add 으면 to the stem, otherwise just add 면 to the stem.
For example the verb 먹다 has a 받침, so if combined with, say this grammar pattern: A/V + (으)면, it will use A/V + 으면 since it has a 받침 and it will be conjugated as 먹으면. However verb/adjectives whose stem ends with ㄹ 받침 do not follow these rules like the rest of the consonants.
If these ㄹ verbs are followed by ㄴ,ㅂ,ㅅ, then the ㄹ disappears.
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also cases like 로, 면 ㄹ can't be used with (으) cases?
seperate table for ㄹ + grammars like future tense, 로, and 면? Also ㄴ/는데
|Verb/Adjective||+ Grammar Pattern||Result||Comment|
|길다 (to be long)|
|놀다 (to play, hang out)||A/V + 아 / 어 / 여 + 요||놀아||No conflicts, regular form|
|들다 (to carry)|
|만들다 (to make)||A/V + ㅂ니다 / 습니다||만듭니다||explain (??)|
|말다 (Don't ~)||V + 지 말다 + 세요||V + 지 마세요||ㄹ collides with ㅅ, so ㄹ disappears. Note in this example 말다 is part of the grammar pattern.|
|살다 (to live)||A/V + (으)면||살면||ㄹ 받침s doesn't follow the normal rules, so just gets 면 appended to it|
|알다 (to know)|
|열다 (to open)|
|울다 (to cry)||A/V + 니||우니||ㄹ collides with ㄴ, so ㄹ disappears|
|팔다 (to sell)||V + 세요||파세요||ㄹ collides with ㅅ, so ㄹ disappears|
|힘들다 (to be difficult, tiring)||A/V + (으)니까||힘드니까||ㄹ can't be used with (으) in this case and also collides with ㄴ, so ㄹ disappears|