English verb conjugation
COULD DAB

Regular verb: dab - dabbed - dabbed

Affirmation

Simple form	V-ing form
I could dab you could dab she could dab we could dab you could dab they could dab	I could be dabbing you could be dabbing she could be dabbing we could be dabbing you could be dabbing they could be dabbing
Perfect	V-ing perfect
I could have dabbed you could have dabbed she could have dabbed we could have dabbed you could have dabbed they could have dabbed	I could have been dabbing you could have been dabbing she could have been dabbing we could have been dabbing you could have been dabbing they could have been dabbing

Negation

Simple form	V-ing form
I couldn't dab you couldn't dab she couldn't dab we couldn't dab you couldn't dab they couldn't dab	I couldn't be dabbing you couldn't be dabbing she couldn't be dabbing we couldn't be dabbing you couldn't be dabbing they couldn't be dabbing
Perfect	V-ing perfect
I couldn't have dabbed you couldn't have dabbed she couldn't have dabbed we couldn't have dabbed you couldn't have dabbed they couldn't have dabbed	I couldn't have been dabbing you couldn't have been dabbing she couldn't have been dabbing we couldn't have been dabbing you couldn't have been dabbing they couldn't have been dabbing

Interrogative form

Simple form	V-ing form
could I dab? could you dab? could she dab? could we dab? could you dab? could they dab?	could I be dabbing? could you be dabbing? could she be dabbing? could we be dabbing? could you be dabbing? could they be dabbing?
Perfect	V-ing perfect
could I have dabbed? could you have dabbed? could she have dabbed? could we have dabbed? could you have dabbed? could they have dabbed?	could I have been dabbing? could you have been dabbing? could she have been dabbing? could we have been dabbing? could you have been dabbing? could they have been dabbing?

Interro-negative form

Simple form	V-ing form
couldn't I dab? couldn't you dab? couldn't she dab? couldn't we dab? couldn't you dab? couldn't they dab?	couldn't I be dabbing? couldn't you be dabbing? couldn't she be dabbing? couldn't we be dabbing? couldn't you be dabbing? couldn't they be dabbing?
Perfect	V-ing perfect
couldn't I have dabbed? couldn't you have dabbed? couldn't she have dabbed? couldn't we have dabbed? couldn't you have dabbed? couldn't they have dabbed?	couldn't I have been dabbing? couldn't you have been dabbing? couldn't she have been dabbing? couldn't we have been dabbing? couldn't you have been dabbing? couldn't they have been dabbing?