English verb conjugation
COULD SOW

Irregular verb: sow - sowed - sown, sowed

Affirmation

Simple form	V-ing form
I could sow you could sow she could sow we could sow you could sow they could sow	I could be sowing you could be sowing she could be sowing we could be sowing you could be sowing they could be sowing
Perfect	V-ing perfect
I could have sown, sowed you could have sown, sowed she could have sown, sowed we could have sown, sowed you could have sown, sowed they could have sown, sowed	I could have been sowing you could have been sowing she could have been sowing we could have been sowing you could have been sowing they could have been sowing

Negation

Simple form	V-ing form
I couldn't sow you couldn't sow she couldn't sow we couldn't sow you couldn't sow they couldn't sow	I couldn't be sowing you couldn't be sowing she couldn't be sowing we couldn't be sowing you couldn't be sowing they couldn't be sowing
Perfect	V-ing perfect
I couldn't have sown, sowed you couldn't have sown, sowed she couldn't have sown, sowed we couldn't have sown, sowed you couldn't have sown, sowed they couldn't have sown, sowed	I couldn't have been sowing you couldn't have been sowing she couldn't have been sowing we couldn't have been sowing you couldn't have been sowing they couldn't have been sowing

Interrogative form

Simple form	V-ing form
could I sow? could you sow? could she sow? could we sow? could you sow? could they sow?	could I be sowing? could you be sowing? could she be sowing? could we be sowing? could you be sowing? could they be sowing?
Perfect	V-ing perfect
could I have sown, sowed? could you have sown, sowed? could she have sown, sowed? could we have sown, sowed? could you have sown, sowed? could they have sown, sowed?	could I have been sowing? could you have been sowing? could she have been sowing? could we have been sowing? could you have been sowing? could they have been sowing?

Interro-negative form

Simple form	V-ing form
couldn't I sow? couldn't you sow? couldn't she sow? couldn't we sow? couldn't you sow? couldn't they sow?	couldn't I be sowing? couldn't you be sowing? couldn't she be sowing? couldn't we be sowing? couldn't you be sowing? couldn't they be sowing?
Perfect	V-ing perfect
couldn't I have sown, sowed? couldn't you have sown, sowed? couldn't she have sown, sowed? couldn't we have sown, sowed? couldn't you have sown, sowed? couldn't they have sown, sowed?	couldn't I have been sowing? couldn't you have been sowing? couldn't she have been sowing? couldn't we have been sowing? couldn't you have been sowing? couldn't they have been sowing?