Suru is one of the only two irregular Japanese verbs. It can be combined with verbs of chinese origin and other loan words to form other compound verbs

Verb ClassIrregular
Stemsu -
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Present Indicative Plain setsumei suru setsumei shinai
Polite setsumei shimasu setsumei shimasen
Past Indicative Plain setsumei shita setsumei shinakatta
Polite setsumei shimashita setsumei shimasen deshita
Presumptive Plain setsumei shiyō
setsumei suru darō
setsumei shinai darō
Polite setsumei shimashō
setsumei suru deshō
setsumei shinai deshō
Past Presumptive Plain setsumei shitarō
setsumei shita darō
setsumei shinakatta darō
Polite setsumei shimashitarō setsumei shinakatta deshō
Present Progressive Plain
Polite setsumei shite imasu setsumei shite imasen
Past Progressive Plain
Polite setsumei shite imashita setsumei shite imasen deshita
Provisional Plain setsumei sureba setsumei shinakereba
Polite setsumei shimaseba
setsumei shimasureba
setsumei shimasen nara
Conditional Plain setsumei shitara setsumei shinakattara
Polite setsumei
setsumei shimashitara
setsumei shimasen deshitara
Potential Plain setsumei dekiru setsumei dekinai
Polite setsumei dekimasu setsumei dekimasen
Causative Plain setsumei saseru
Imperative Plain setsumei shiro setsumei suruna
Polite setsumei shite kudasai setsumei shinaide kudasai
Passive Plainsareru

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