English verb conjugation
COULD FUN

Regular verb: fun - funed - funed

Affirmation

Simple form	V-ing form
I could fun you could fun she could fun we could fun you could fun they could fun	I could be funing you could be funing she could be funing we could be funing you could be funing they could be funing
Perfect	V-ing perfect
I could have funed you could have funed she could have funed we could have funed you could have funed they could have funed	I could have been funing you could have been funing she could have been funing we could have been funing you could have been funing they could have been funing

Negation

Simple form	V-ing form
I couldn't fun you couldn't fun she couldn't fun we couldn't fun you couldn't fun they couldn't fun	I couldn't be funing you couldn't be funing she couldn't be funing we couldn't be funing you couldn't be funing they couldn't be funing
Perfect	V-ing perfect
I couldn't have funed you couldn't have funed she couldn't have funed we couldn't have funed you couldn't have funed they couldn't have funed	I couldn't have been funing you couldn't have been funing she couldn't have been funing we couldn't have been funing you couldn't have been funing they couldn't have been funing

Interrogative form

Simple form	V-ing form
could I fun? could you fun? could she fun? could we fun? could you fun? could they fun?	could I be funing? could you be funing? could she be funing? could we be funing? could you be funing? could they be funing?
Perfect	V-ing perfect
could I have funed? could you have funed? could she have funed? could we have funed? could you have funed? could they have funed?	could I have been funing? could you have been funing? could she have been funing? could we have been funing? could you have been funing? could they have been funing?

Interro-negative form

Simple form	V-ing form
couldn't I fun? couldn't you fun? couldn't she fun? couldn't we fun? couldn't you fun? couldn't they fun?	couldn't I be funing? couldn't you be funing? couldn't she be funing? couldn't we be funing? couldn't you be funing? couldn't they be funing?
Perfect	V-ing perfect
couldn't I have funed? couldn't you have funed? couldn't she have funed? couldn't we have funed? couldn't you have funed? couldn't they have funed?	couldn't I have been funing? couldn't you have been funing? couldn't she have been funing? couldn't we have been funing? couldn't you have been funing? couldn't they have been funing?