× Group 1 Verbs dictionary form ~masu ~te ~ta ~nai ~nakatta ~ba causative passive imperative potential volitional
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込む・込みます

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吐く・吐きます

× Group 2 Verbs dictionary form ~masu ~te ~ta ~nai ~nakatta ~ba causative passive imperative potential volitional
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考える・考えます

× Group 3 Verbs dictionary form ~masu ~te ~ta ~nai ~nakatta ~ba causative passive imperative potential volitional
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ニヤニヤする・ニヤニヤします

× i-adjectives ~i+N ~idesu ~kute ~katta ~kunai ~kunakatta ~kereba ~i ~ku
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珍しい・珍しいです

× na-adjectives ~na+N ~desu ~de ~datta ~janai ~janakatta ~naraba ~da ~ni
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不安[な]・不安です

× Noun dictionary form
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すっぽん

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×

×

満員電車