Learn -(으)ㄹ 수밖에 없다 to say that you have no other choice but to do something.
By the end, you can attach -(으)ㄹ 수밖에 없다 correctly to verb stems (including ㄹ, ㄷ and ㅂ verbs) and use it in the present and past tense to say you had no other option.
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