√yup 'obstruct'
[present: [4.] yupyati ]perfect: yuy/opa yuyopim/a aorist: [2.] ayupat -- [3.] ayUyupan etc. [future: yopizyati yopitA ]verbal: yupit/a secondary: intensive: yoyupy/ate etc. -- causative: yop/ayati etc. derivatives: y/Upa V.+ -y/opana V. yoyupana C1.