• Basic forms
• 司どる — to govern; to administer; to control / base form
• 司どります — govern; administer / masu form
• 司どった — governed; administered / ta form
• 司どって — governing; administering / te-form
• 司どらない — do not govern / negative form
• 司どれば — if (one) governs / conditional
• 司どれ — govern! (formal / rare) / imperative
• Other common forms
• 政治を司どる — govern politics
• 儀式を司どる — preside over a ceremony
• More
• 司どろう — let’s govern; take charge of / 〜よう form
• 司どらなかった — did not govern / past negative
• 司どっている — is governing; is in charge of / progressive

司どる（つかさどる） is a godan verb ending in る. It is a **formal / literary verb**, commonly used for administration, authority, or official responsibility, as in 政治を司どる or 儀式を司どる.