Group 1 Group 2 Group 3
dictionary form (plain non-past) utau tobu miru taberu suru kuru potential form utaeru toberu mirareru mireru taberareru tabereru dekiru korareru koreru
volitional form utaou tobou miyou tabeyou shiyou koyou
imperative form utae tobe miro tabero shiro koi
conditional form utaeba tobeba mireba tabereba sureba kureba
Group 1 Group 2 Group 3
suggestion form of -masu V-masu + masho utai-masho mi-masho shi-masho imperative expression V-masu + nasai utai-nasai mi-nasai shi-nasai be V-ing V-te + iru utate iru mite iru shite iru if/when... V-ta + ra utata-ra mita-ra shita-ra even if... V-te + mo utate-mo mite-mo shite-mo negative -te form V-nai + zu ni utawa-zu ni mi-zu ni *se-zu ni prohibitive form V-ru + na utau na miru na suru na
passive form V-nai + (ra)reru utawa-reru mi-rareru *sa-reru causative form V-nai + (sa)seru utawa-seru mi-saseru *sa-seru