English verb conjugation
COULD REGRIND

Irregular verb: regrind - reground - reground

Affirmation

Simple form	V-ing form
I could regrind you could regrind she could regrind we could regrind you could regrind they could regrind	I could be regrinding you could be regrinding she could be regrinding we could be regrinding you could be regrinding they could be regrinding
Perfect	V-ing perfect
I could have reground you could have reground she could have reground we could have reground you could have reground they could have reground	I could have been regrinding you could have been regrinding she could have been regrinding we could have been regrinding you could have been regrinding they could have been regrinding

Negation

Simple form	V-ing form
I couldn't regrind you couldn't regrind she couldn't regrind we couldn't regrind you couldn't regrind they couldn't regrind	I couldn't be regrinding you couldn't be regrinding she couldn't be regrinding we couldn't be regrinding you couldn't be regrinding they couldn't be regrinding
Perfect	V-ing perfect
I couldn't have reground you couldn't have reground she couldn't have reground we couldn't have reground you couldn't have reground they couldn't have reground	I couldn't have been regrinding you couldn't have been regrinding she couldn't have been regrinding we couldn't have been regrinding you couldn't have been regrinding they couldn't have been regrinding

Interrogative form

Simple form	V-ing form
could I regrind? could you regrind? could she regrind? could we regrind? could you regrind? could they regrind?	could I be regrinding? could you be regrinding? could she be regrinding? could we be regrinding? could you be regrinding? could they be regrinding?
Perfect	V-ing perfect
could I have reground? could you have reground? could she have reground? could we have reground? could you have reground? could they have reground?	could I have been regrinding? could you have been regrinding? could she have been regrinding? could we have been regrinding? could you have been regrinding? could they have been regrinding?

Interro-negative form

Simple form	V-ing form
couldn't I regrind? couldn't you regrind? couldn't she regrind? couldn't we regrind? couldn't you regrind? couldn't they regrind?	couldn't I be regrinding? couldn't you be regrinding? couldn't she be regrinding? couldn't we be regrinding? couldn't you be regrinding? couldn't they be regrinding?
Perfect	V-ing perfect
couldn't I have reground? couldn't you have reground? couldn't she have reground? couldn't we have reground? couldn't you have reground? couldn't they have reground?	couldn't I have been regrinding? couldn't you have been regrinding? couldn't she have been regrinding? couldn't we have been regrinding? couldn't you have been regrinding? couldn't they have been regrinding?